1990-1999

  1. H. Yoshizawa, S. Mitsuda, H. Mo ri, Y. Yamada, T. Kobayashi, H. Sawa and J. Akimitsu: Copper Spin Correlations in a Two-Dimensional Antiferromagnet Pr2CuO4-d, J. Phys. Soc. Jpn., 59 No.2 (1990) 428-431.
  2. S. Sugai, T. Kobayashi and J. Akimitsu: Magnon and Phonon Raman Scattering in Pr2CuO4, Solid State Commun., 74 No. 7 (1990) 599-601.
  3. A. Yamazaki, J. Akimitsu, H. Miyatake, S. Okuma and N. Nishida: Observation of an Antiferromagnetic Phase in the Bi2Sr2CuO6+y System by the m+SR Technique, J. Phys. Soc. Jpn., 59 No.6 (1990) 1921-1924.
  4. S. Katano, N. Mo^ri, H. Takahashi, T. Kobayashi and J. Akimitsu: Pressure Effects on the Antiferromagnetic Ordering in Pr2CuO4-y, J. Phys. Soc. Jpn., 59 No.6 (1990) 1928-1931.
  5. J. Akimitsu and H. Sawa: New High-Tc Copper Oxide Superconductors: (Nd,Ce,Sr)2CuO4-z and (Ln,Ce,Ba)4Cu3O9-z (Ln: Nd, Sm, Eu and Gd), Mechanism of Superconductivity, (1990) 6-13.
  6. S. Sugai, M. Sato, T. Kobayashi, J. Akimitsu, T. Ito, H. Takagi, S. Uchida, S. Hosoya, T. Kajitani and T. Fukuda: High Energy Spin Excitations in the Insulating Phases of High-Tc Superconducting Cuprates and La2NiO4, Phys. Rev. B, 42 No.1 (1990) 1045-1047.
  7. S. Sugai, M. Sato, T. Ito, T. Ido, H. Takagi, S. Uchida, T. Kobayasi, J. Akimitsu, Y. Hidaka, T. Murakami, S. Hosoya, T. Kajitani and T. Fukuda: Spins and Carriers in Oxide Superconductors Studied by Raman Scattering, Physica B, 165 & 166 (1990) 1263-1264.
  8. T. Ekino and J. Akimitsu: Superconducting Energy Gap in Spinel Compound Li1+xTi2-xO4 from Electron Tunneling, Physica B, 165 & 166 (1990) 1599-1600.
  9. H. Kito, H. Sawa, J. Akimitsu, F. Izumi, T. Ishigaki and H. Asano: Nonstoichiometry and Mixed Pr Valency in (Pr1-xSrx)(Pr1-yCey)CuO4-z, Jpn. J. Appl. Phys., 29 No.10 (1990) L1803-L1806.
  10. T. Ekino and J. Akimitsu: Electron-Tunneling Studies on the Superconducting (La1-xSrx)2CuO4 and YBa2Cu3Oy Systems, Phys. Rev. B, 42 No.13A (1990) 8049-8056.
  11. J. Iida, M. Tanaka, H. Kito and J. Akimitsu: Succesive Phase Transitions in Nearly Stoichiometric ErFe2O4, J. Phys. Soc. Jpn., 59 No.11 (1990) 4190-4191.
  12. T. Ekino and J. Akimitsu: Tunneling Spectroscopy on High-Tc Superconductors, Studies of High Temperature Superconductors, 9 (1990) 259-309.: Edited by A.Narlikar
  13. J. Akimitsu and M. Kokubun; Design of High-Tc Oxide Superconductors, The 2nd ISSP International Symposium on Physics and Chemistry of Oxide Superconductors (PCOS U91),(1991) 17.: (Springer-Verlag)
  14. J. Akimitsu, J. Amano, H. Sawa, O. Nagase, K. Gyoda amd M. Kogai: A New Non-Cu -Oxide Superconductor (Sr1-xLnx)Nb2O6-y (Ln: La, Nd, Pr and Ce), Jpn. J. Appl. Phys., 30 No.7A (1991) L1155-L1156.
  15. S. Funahashi, H. Kito, J. Akimitsu, J. Iida, M. Tanaka and K. Siratori: Neutron Diffraction of Two-Dimensional Triangular Lattice of ErFe2O4, Physica B, 174 (1991) 74-76.
  16. T. Ekino and J. Akimitsu: Observations of Superconducting Tunnel Conductance Structures in YBa2Cu3O7-y Tunnel Junctions, Mechanism of Superconductivity, (1991) 294-297.
  17. J. Akimitsu, J. Amano, H. Sawa and Y. Matsui: Superconductivity in (Sr1-xLnx)Nb2O6-y (Lnd: La, Nd, Pr, Ce, Gd and Ho), Mechanism of Superconductivity, (1991) 11-16.
  18. J. Akimitsu, J. Amano, K. Tomimoto, T. Suzuki, M. Kogai, Y. Fukawa, H. Sawa and Y. Matsui: Superconductivity in Sr(Ln)-Nb-O System (Lnd; La, Nd, Pr, Ce, Gd and Ho), Physica C, 185-189 (1991) 723-724.
  19. J. Kikuchi, S. Kambe, H. Yasuoka, Y. Ueda, K. Tomimoto and J. Akimitsu: 51V Knight Shift and Quadrupole Interaction in the Low-Temperature Phase of LiVO2, J. Phys. Soc. Jpn., 60 No.11 (1991) 3620-3624.
  20. H. Nakane, T. Watanabe, H. Kojima, J. Akimitsu and S. Yoshizawa: Measurement of Very Low Resistivity for a Rod-Shaped Superconductor, Physica C, 185-189 (1991) 1329-1330.
  21. K. Tajima, J. Akimitsu, M. Akimitsu, L. Rebelsky, G.Gru bel and G. Shirane: The Time Evolution of the First-Order Magnetic Phase Transition in Dy-4%Y Alloy, J. Mag. Mag. Mat., 104-107 (1992) 177-178.
  22. Y. Kimishima, M. Tsuchiya, K. Tomimoto and J. Akimitsu: Phase Transition in LiVO2, J. Mag. Mag. Mat., 104-107 (1992) 779-780.
  23. J. Akimitsu: New Material Design of Cu-Oxide Superconductors, JJAP Sereis 7 Mechanisim of Superconductivity, (1992) 20-22.
  24. T. Ekino and J. Akimitsu: Tunneling Spectroscopy of Copper-Oxide Superconductors, JJAP Series 7 Mechanism of Superconductivity, (1992) 260-271.
  25. H. Kito, J. Akimitsu, S. Funahashi, J. Iida, M. Tanaka and K. Siratori: Succesive Phase Transitions in Two -Dimensional Antiferromagnet ErFe2O4-d, The 6th Int. Conf. on Ferrite, (1992) 707-710.
  26. J. Akimitsu, M. Uehara, M. Ogawa, H. Nakata, K. Tomimoto, Y. Miyazaki, H. Yamane, T. Hirai, K. Kinoshita and Y. Matsui: Superconductivity in the New Compound (Y1-xCax)0.95Sr2.05Cu2.4 (CO3)0.6Oy, Physica C, 201 (1992) 320-324.
  27. Y. Miyazaki, H. Yamane, N. Kobayashi, T. Hirai, H. Nakata, K. Tomimoto and J. Akimitsu: (C0.35Cu0.65) Sr2(Y0.73Ce0.27)2Cu2Ox: a New Superconductor Containing CO3, Physica C, 202 (1992) 162-166.
  28. T. Ekino and J. Akimitsu: Tunneling Spectroscopy of Copper Oxide Superconductors, Superconductivity (Frontiers in Physics) World Scientific, (1992) 477-525.
  29. J. Akimitsu: High-Tc Superconductors Based on the New Material Design, Phase Transitions, 41 (1993) 13-19.
  30. T. Den, T. Kobayashi and J. Akimitsu: Superconductor with Tc up to 80 K in the Compound (Ln,Ca) (Sr,Ba)2(C,Cu)Cu2O7-d, Physica C, 208 (1993) 351-355.
  31. A. Yoshida, H. Tamura, K. Gotoh, T. Imamura, S. Hasuo and J. Akimitsu: Selective Plasma Oxidation of Oxygen-Deficient YBa2Cu3O7-x, J. Appl. Phys.,73 No.11 (1993) 7549-7555.
  32. H. Takahashi, N. Mo^ri, Y. Nagata, S. Nakamura, T. Uchida, J. Akimitsu and Y. Tokura: High Pressure Study on the Superconducting Transition Temperature and Hall Coefficient of Ba1-xKxBiO3 up to 8 GPa, Physica C, 210 (1993) 485-488.
  33. S. Imagawa, H. Ohta, M. Motokawa, O. Fujita and J. Akimitsu: High Field ESR of Spin-Peierls System CuGeO3, Physica B, 201 (1994) 178-181.
  34. M. Uehara, H. Nakata, J. Akimitsu, T. Den, T. Kobayashi and Y. Matsui: Superconductivities in the (Bi,Pb)-Oxycarbonate System, Physica C, 213 (1993) 51-56.
  35. S. Katano, R. M. Nicklow, S. Funahashi, N. Mo^ri, T. Kobayashi and J. Akimitsu: Pressure Induced Successive Magnetic Phase Transitions in Pr2CuO4-y, Physica C, 215 (1993) 92-96.
  36. S. Noma, T. Saito, T. Ekino, J. Akimitsu and S. Sueno: Superconducting Phase in Nb1-xTaxSe3 (0.135< x < 0.16), Phys. Rev. B, 48 No.13 (1993) 9620-9627.
  37. M. Uehara, H. Nakata and J. Akimitsu: Superconductivity in the New Compound Sr2CuO2(CO3)1-x (BO3)x, Physica C, 216 (1993) 453-457.
  38. M. Udagawa, Y. Nagaoka, N. Ogita, M. Masada, J. Akimitsu and K. Ohbayashi: Infrared Absorption and Raman Study of R2CuO4, Advances in Superconductivity IV, (1993) 175-178.
  39. T. Ekino, M. Kosugi, J. Akimitsu and Y. Nagata: Tunneling Measurements of Superconducting Energy Gap and Electron-Phonon Interaction in Ba1-xKxBiO3, Advances in Superconductivity VI (1993).: The 6th International Symposium on Superconductibity (ISS’93)
  40. Y. Matsui, M. Ogawa, M. Uehara, H. Nakata and J. Akimitsu: Incommensurate and Commensurate Superstructures in the Oxycarbonate Superconductor TlSr4-xBaxCu2(CO3)Oy (x ~~ 2), Physica C, 217 (1993) 287-293.
  41. T. Ekino, T. Den and J. Akimitsu: Superconducting energy gaps in Bi2Sr2CuO6+y and Bi2Sr2-xNdx CuO6+y, Physica C, 218 (1993) 387-395.
  42. J. Akimitsu, H. Nakata, M. Uehara and Y. Matsui: New Copper Oxycarbonate Superconductors, ICMAS-93 Superconducting Materials, (1993) 21-26.: edited by J.Etourneau, J.B.Torrance and H.Yamauchi
  43. M. Udagawa, Y. Nagaoka ,N. Ogita, M. Masada, J. Akimitsu and K. Ohbayashi: Raman Scattering Study of R2CuO4 (R = Pr, Nd, Sm and Gd), Phys. Rev. B, 49 No.1 (1994) 585-588.
  44. M. Kikuchi, E. Ohshima, N. Ohnishi, Y. Muraoka, S. Nakajima, E. Aoyagi, M. Ogawa, J. Akimitsu, T. Oku, K. Hiraga and Y. Syono: Synthesis and Superconductivity of Oxycarbonates of the Tl-1201 Phase, Physica C, 219 (1994) 200-204.
  45. H. Kito, J. Akimitsu, F. Izumi, T. Kamiyama and H. Asano: Structure Refinements of Orthorhombic (La1-xCax)2CuO4 (x = 0.05), J. Phys. Soc. Jpn, 63 No.2 (1994) 695-699.
  46. J. Akimitsu, J. Amano, M. Yoshinari, M. Kokubun, T. Iwasaki, S. Okuma, N. Nishida, K. Nishiyama and N. Mori: Magnetic Phase Transitons in (Pr2-xCex)CuO4-d, Hyperfine Interaction, 85 (1994) 187-192.
  47. M. Udagawa, Y. Nagaoka, T. Johkou, N. Ogita, M. Masada, J. Akimitsu and K. Ohbayashi: Infrared Absorption of Nd2-xCexCuO4 and R2CuO4 (R = Pr, Nd, Sm, and Gd), Physica B, 194-196 (1994) 433-434.
  48. T. Ekino and J. Akimitsu: CDW Tunneling Density of States in NbSe3, Physica B, 194-196 (1994) 1221-1222.
  49. J. Akimitsu, T. Ekino, T. Saito, S. Noma and S. Sueno: Superconductivity in Nb1-xTaxSe3 (0.14< x <0.16), Physica B, 194-196 (1994) 2077-2078.
  50. J. Akimitsu, H. Nakata and M. Uehara: A New Family of Superconductors Containing Carbonate Group, Journal of Superconductivity, 7 No.1 (1994) 19-22.
  51. M. Uehara, S. Sahoda, H. Nakata, J. Akimitsu and Y. Matsui: New Hg-Based Oxycarbonate Superconductor HgBa2Sr2CuO6+d(CO3), Physica C, 222 (1994) 27-32.
  52. T. Ekino and J. Akimitsu: Phonon Structures in Tunneling Conductance of Superconducting YBa2Cu3O7, Journal of Superconductivity, 7 No. 2 (1994) 367-369.
  53. M. Udagawa, Y. Nagaoka, N. Ogita, M. Masada, J. Akimitsu and K. Ohbayashi: Phonon Raman Scattering of R2CuO4 (R = Pr, Nd, Sm, and Gd), Journal of Superconductivity, 7 No. 2 (1994) 449-451.
  54. M. Arai, M. Fujita, K. Ubukata, T. Bokui, K. Tabata, H. Ohta, M. Motokawa, T. Otomo, K. Ohyama, M. Mino, J. Akimitsu and O. Fujita: Neutron Scattering Studies on a Spin-Peierls Material CuGeO3, J. Phys. Soc. Jpn., 63 No.5 (1994) 1661-1665.
  55. H. Nakata, M. Uehara, J. Akimitsu and Y. Matsui: A New Family of Superconductors Containing Carbonate Group, Bulletin of the Electrotrechnical Laboratory, 58 No.6 (1994) 468-472.
  56. M. Nishi, O. Fujita and J. Akimitsu: Neutron Scattering Study on the Spin-Peierls Transition in a Quasi One-Dimensional Magnet CuGeO3, Phys. Rev. B, 50 No.9 (1994) 6508-6510.
  57. O. Kamimura, M. Terauchi, M. Tanaka, O. Fujita and J. Akimitsu: Electron Diffraction Study of an Inorganic Spin-Peierls System CuGeO3, J. Phys. Soc. Jpn., 63 No.7 (1994) 2467-2471.
  58. H. Ohta, S. Imagawa, H. Ushiroyama, M. Motokawa, O. Fujita and J. Akimitsu: Electron Spin Resonance of Spin-Peierls Material CuGeO3, J. Phys. Soc. Jpn., 63 No.8 (1994) 2870-2873.
  59. M. Uehara, M. Uoshima, S. Ishiyama, H. Nakata, J. Akimitsu, Y. Matsui, T. Arima, Y. Tokura and N. Mo^ri: A New Homologous Series of Oxycarbonate Superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-x (BO3)xOy (n = 1, 2 and 3), Physica C, 229 (1994) 310-314.
  60. M. Kosugi, J. Akimitsu, T. Uchida, M. Furuya, Y. Nagata and T. Ekino: Tunneling studies on Ba1-xKxBiO3 Single Crystals with Tc = 15~30 K, Physica C, 229 (1994) 389-395.
  61. H. Namatame, A. Fujimori, H. Torii, T. Uchida, Y. Nagata and J. Akimitsu: Effects of Hole Doping and Electron-Phonon Interaction on the Electronic Structure of Ba1-xKxBiO3 Studied by Photoemission Spectroscopy, Phys. Rev. B, 50 No.18 (1994) 13674-13678.
  62. M. Udagawa, H. Aoki, N. Ogita, O. Fujita, A. Sohma, A. Ogihara and J. Akimitsu: Raman Scattering of CuGeO3, J. Phys. Soc. Jpn., 63 No.11 (1994) 4060-4064.
  63. N. Ikeda, K. Saito, K. Kohn, H. Kito, J. Akimitsu and K. Siratori: Possibility of Magnetoelectric Effect in Antiferromagnetic RFe2O4, Ferroelectrics, 161 (1994) 111-115.
  64. N. Ikeda, K. Kohn, H. Kito, J. Akimitsu and K. Siratori: Dielectric Relaxation and Hopping of Electrons in ErFe2O4, J. Phys. Soc. Jpn., 63 (1994) 4556-4564.
  65. T. Ekino, T. Minami, H. Fujii and J. Akimitsu: Superconducting Energy Gaps in YBa2Cu3O7 and Bi2Sr2CaCu2O8, Physica C, 235-240 (1994) 1899-1900.
  66. T. Ekino, H. Fujii, M. Kosugi,Y. Zenitani and J. Akimitsu: Superconducting Energy Gap in YNi2B2C, Physica C, 235-240 (1994) 2529-2530.
  67. T. Noda, M. Ogawa, J. Akimitsu, M. Kikuchi, E. Ohshima and Y. Syono: Synthesis of Oxycarbonate Solid Solutions (Tl1-xHgx)Sr2Ba2Cu2(CO3)Oy (x = 0~ 1.0) and Superconductivity, Physica C, 242 (1995) 12-16.
  68. H. Kito, M. Nishi, S. Katano, J. Akimitsu, S. Funahashi and K. Siratori: Interlayer Spin Correlation in a 2-D Triangular Ferrimagnet ErFe2O4, J. Mag. Mag., 140-144 (1995) 1647-1648.
  69. M. Arai, M. Fujita, K. Ubukata, H. Ohta, M. Motokawa, T. Otomo, K. Ohyama, M. Mino, J. Akimitsu and O. Fujita: Structural Evolution of Spin-Peierls Material CuGeO3 Studied by Neutron Scattering, J. Mag. Mag., 140-144 (1995) 1689-1690.
  70. H. Ohta, S. Imagawa, Y. Yamamoto, M. Motokawa, O. Fujita and J. Akimitsu: ESR Study of High and Low Field Phases of Spin-Peierls System CuGeO3, J. Mag. Mag., 140-144 (1995) 1685-1686.
  71. O. Fujita, J. Akimitsu, M. Nishi and K. Kakurai: Evidence for a Singlet-Triplet Transition in Spin-Peierls System CuGeO3, Phys. Rev. Lett., 74 No. 9 (1995) 1677-1680.
  72. H. Ohta, Y. Yamamoto, S. Imagawa, T. Nanba, K. Watanabe, M. Arai, M. Motokawa, O. Fujita and J. Akimitsu: Submillmeter Wave ESR and Far Infrared Spectroscopy Measurements of CuGeO3, International Journal of Infrared and Millimeter Wave, Vol. 16 No. 3 (1995) 501-512.
  73. M. Nishi, O. Fujita and J. Akimitsu: Inelastic Neutron Scattering Study of the Lattice Dynamics in CuGeO3, Physica B, 210 (1995) 149-156.
  74. N. Ikeda, K. Kohn, H. Kito, J. Akimitsu and K. Siratori: Anisotropy of Dielectric Dispersion in ErFe2O4 Single Crystal, J. Phys. Soc. Jpn., 64 No. 4 (1995) 1371-1377.
  75. Y. Zenitani, K. Inari, S. Sahoda, M. Uehara, J. Akimitsu, N. Kubota and M. Ayabe: Superconductivity in (Ca,Na)2CaCu2O4Cl2 --the New Simplest Double-Layer Cuprate with Apical Chlorine--, Physica C, 248(1995) 167-170.
  76. H. Kito, S. Ishida, M. Suzuki, J. Akimitsu, S. Takekawa and K. Siratori: Ultrasonic Investigation of a Two-Dimensional Triangluar Lattice Ferrimagnet, ErFe2O4-d Single Crystal, J. Phys. Soc. Jpn., 64 No. 6 (1995) 2147-2151.
  77. J. Akimitsu, M. Uoshima, S. Ishiyama, M. Sato, H. Nakata, M. Uehara, Y. Matsui, T. Arima, Y. Tokura and N. Mo ri: New Oxycarbonate Superconductors Sr2(Ca,Sr)n-1Cun(CO3)Oy (n = 1, 2, 3) and Ba2Can-1Cu2(CO3)Oy (n = 3), Superconductivity and Superconducting Materials Technologies, 8 (1995) 35-40.: Edited by P. Vincenzini, Advances in Science and Technology
  78. H. Takahashi, N. Mo^ri, O. Fujita, J. Akimitsu and T. Matsumoto: Effect of Pressure on the Magnetic Susceptibity in Spin-Peierls Cuprate, CuGeO3, Solid State Commun., 95 No.12 (1995) 817-822.
  79. K. Yamada, N. Suzuki and J. Akimitsu: Magnetic Properties of (Sr,Ba)2Cu3O4Cl2: Two-Dimensional Antiferromagnetic Cuprates Containing Two Types of Cu-site, Physica B, 213 & 214 (1995) 191-193.
  80. H. Kito, J. Akimitsu, M. Nishi, S. Katano, S. Funahashi and K. Siratori: Interlayer Correlation of Fe Spins and Charges in the 2-D Triangular Ferrimagnet ErFe2O4, Physica B, 213&214 (1995) 215-217.
  81. M. Nishi, O. Fujita, J. Akimitsu, K. Kakurai and Y. Fujii: Magnetic Excitatinons in CuGeO3, Physica B, 213&214 (1995) 275-277.
  82. O. Fujita, M. Nishi, J. Akimitsu, H. Okumura, K. Kakurai and Y. Fujii: Characterization of the Spin-Peierls Gap in CuGeO3 by Means of Inelastic Neutron Scattering, Physica B, 213&214 (1995) 281-283.
  83. M. Fujita, M. Arai, K. Ubukata, H. Ohta, M. Mino, M. Motokawa, K. Knight, R. Ibberson, J. B. Forsyth, S. M. Bennington, J. Akimitsu and O. Fujita: The Lattice Evolution of the Spin-Peierls Material CuGeO3 Studied by Neutron Scattering, Physica B, 213&214 (1995) 288-290.
  84. Y. Matsui and J. Akimitsu: Direct Observations of Arrangements of Carbonate Groups in Oxycarbonate Superconductors by High-Resolution Electron Microscopy, Microscopy Research and Technique, 30 (1995) 155-166.
  85. S. Katano, H. Kito, J. Akimitsu, K. Siratori, S. Funahashi and H. R. Child: Two-Dimensinal Diffraction Patterns of ErFe2O4-d, Physica B, 213 & 214 (1995) 212-214.
  86. A. Sohma, H. Okajima, T. Yokoo, A. Yamashita, J. Akimitsu, K. Nishiyama and K. Nagamine: mSR Studies on Spin-Peierls System Cu1-xZnxGeO3 (x = 0, 0.01, 0.03 and 0.07), J. Phys. Soc. Jpn., 64 No. 8 (1995) 3060-3065.
  87. M. Nishi, O. Fujita, J. Akimitsu, K. Kakurai and Y. Fujii: High Pressure Effects on the Spin-Peierls Compound CuGeO3, Phys. Rev. B, 52 No.10 (1995) R6959-R6962.
  88. T. Yokoo, T. Sakaguchi, K. Kakurai and J. Akimitsu: Observation of the Haldane Gap in Y2BaNiO5 Single Crystal, J. Phys. Soc. Jpn., 64 No. 10 (1995) 3651-3655.
  89. T. Mizokawa, A. Fujimori, T. Arima, Y. Tokura, N. Mo ri and J. Akimitsu: Electronic Structure of PrNiO3 Studied by Photoemission and X-Ray Absorption Spectroscopy, Phys Rev. B, 52 No.19 (1995) 13865-13873.
  90. S. Katano, O. Fujita, J. Akimitsu and M. Nishi: Pressure Effects on the Dimerization in the Spin-Peierls State of CuGeO3, Phys. Rev. B, 52 No.21 (1995) 15364-15367.
  91. H. Nakata, J. Akimitsu, S. Katano, T. Minami, N. Ogita and M. Udagawa: Structural Phase Transition of Sr2CuO2(CO3), Physica C, 255 (1995) 157-166.
  92. M. Uehara, M. Ogawa and J. Akimitsu: Metal-Insulator Transition in the S = 1/2 Spin Ladder System (Sr0.4Ca0.6)14Cu24-xCoxO41-d Physica C, 255 (1995) 193-203.
  93. Y. Matsui, T. Kawashima, E. Takayama-Muromachi and J. Akimitsu: Structures of Oxycarbonate Superconductors Examined by High-Resolusion Transmission Electron Microscopy, Studies of High Temperature Superconductors, Vol. 15 (1995) 145-165.
  94. T. Ekino, H. Fujii, M. Kosugi, Y. Zenitani and J. Akimitsu: Tunneling Spectroscopy of Superconducting Energy Gap in RNi2B2C ( R = Y and Lu), Phys. Rev. B, 53 No.9 (1996) 5640-5649.
  95. I. Yamada, M. Nishi and J. Akimitsu: Electron Paramagnetic Resonance Governed by the Dzyaloshinsky-Moriya Antisymmetric Exchange Interaction in CuGeO3, J. Phys.:Condensed Matt.,8 (1996) 2625-2640.
  96. N. Ogita, M. Udagawa, T. Yokoo, O. Fujita and J. Akimitsu: Raman Scattering of CuGeO3 and Y2BaNiO5, Czechoslovak Joural of Phys., Vol. 46 (1996) 1975-1976.
  97. J. Akimitsu, M.  Uehara, T. Nagata, S. Matsumoto, Y. Kitaoka, H. Takahashi and N. Mo^ri: Metal-Insulator Transition in the S=1/2 Spin-Ladder System (Sr0.4Ca0.6)14Cu24-xCoxO41-d, Phisica C, 263 (1996) 475-481.
  98. H. Nakata, H. Okajima, T. Yokoo, A. Yamashita and J. Akimitsu: The Phase Diagram of the New Superconductor Sr2CuO2(CO3)1-x(BO3)x, Physica C, 263 (1996) 344-348.
  99. M. C. Martin, G. Shirane, Y. Fujii, M. Nishi, O. Fujita, J. Akimitsu, M. Hase and K. Uchinokura: Temperature Dependence of the Spin-Peierls Energy Gap and Anomalous Line Shapes in CuGeO3, Phys. Rev. B, 53 No. 22 (1996) R14713-R14716.
  100. M. Steiner, K. Kakurai, B. Donner, R. Pynn and J. Akimitsu: The Change of the Symmetry of the Soft-Mode Spin Wave at the Spin-Flop Transition as Observed in MnTiO3 Using Inelastic Polarized Neutron Scattering, J. Phys. Condens. Matter, 8 (1996) 5905-5914.
  101. N. Ogita, Y. Tsunezumi, H. Aoki, M. Udagawa, O. Fujita and J. Akimitsu: Raman Scattering of CuGeO3, Physica B, 219 & 220 (1996) 107-109.
  102. T. Sakaguchi, K. Kakurai, T. Yokoo and J. Akimitsu: Neutron Scattering Study of Magnetic Excitations in the Spin S=1 One-Dimensional Heisernberg Antiferromagnet Y2BaNiO5, J. Phys. Soc. Jpn., 65 No. 9 (1996) 3025-3031.
  103. M. Uehara, T. Nagata, J. Akimitsu, H. Takahashi, N. Mo ri and K. Kinoshita: Superconductivity in the Ladder System Sr0.4Ca13.6Cu24O41.84, J. Phys. Soc. Jpn., 65 No. 9 (1996) 2764-2767.
  104. T. Mizokawa, A. Fujimori, T. Arima, Y. Tokura, N. Mo ri and J. Akimitsu: Photoemission and X-ray Absorption Spectroscopy of PrNiO3, Journal of Electron Spectroscopy and Related Phenomena, 78 (1996) 191-194.
  105. R. Kadono, H. Okajima, A. Yamashita, K. Ishii, T. Yokoo, J. Akimitsu, N. Kobayashi, Z. Hiroi, M. Takano and K. Nagamine: Long Range Magnetic Ordeing in a Spin Ladder Compound LaCuO2.5 Probed by mSR, Phys. Rev. B, 54 No. 14 (1996) R9628-R9630.
  106. Y. Tsunezumi, N. Ogita, J. Akimitsu, E. Nakamura and M. Udagawa: Absence of the Dielectric Anomaly at Tsp of CuGeO3, J. Phys. Soc. Jpn., Vol. 65 No. 10 (1996) 3404-3405.
  107. M. Arai, M. Fujita, M. Motokawa, J. Akimitsu and S. M. Bennington: Quantum Spin Excitations of the Spin-Peierls System CuGeO3, Phys. Rev. Lett., 77 No. 17 (1996) 3649-3652.
  108. M. Sato, J. Akimitsu, H. Takahashi and N. Mo^ri; Effect of High Pressure on Tc of a Homologous Series of Oxycarbonate Superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-xOy(n=1, 2) and Ba2Ca2Cu3(CO3)1-x (BO3)xOy, Physica C, 271 (1996) 79-82.
  109. N. Ogita, T. Minami, Y. Tanimoto, O. Fujita, J. Akimitsu, P. Lemmens, G. Gu¨ntherodt and M. Udagawa: Raman Scattering Study of Phonon and Magnetic Excitations Along the Magnetic Chain in CuGeO3, J. Phys. Soc. Jpn., 65 No. 12 (1996) 3754-3757.
  110. A. Nakamura, N. M. Masaki, M. Nakada, M. Saeki, K. Tomimoto and J. Akimitsu: Solid State Reactions and Some Physical Properties of Reduced Europium Niobates EuxNbOy (0.5 < x < 2), Ceramic Transitions, 71 (1996) pp.295-306.
  111. J. Akimitsu, H. Okajima, A. Yamashita, K. Ishii, T. Yokoo, T. Nagata, M. Uehara, R. Kadono, K. Nagamine, N. Kobayashi, Z. Hiroi, M. Takano, H. Takahashi, N. Mo^ri and K. Kinoshita: Appearance of Magnetic Long Range Order in the Spin Ladder Compound LaCuO2.5, Hyperfine Interactions, 104 (1997) 43-48.
  112. M. Hidaka, M. Hatae, I. Yamada, M. Nishi and J. Akimitsu: Re-Examination of the Room Temperature Crystal Structure of CuGeO3 by X-ray Diffraction Experiments: Observation of New Superlattice Reflections, J. Phys.: Condens Matter, 9 (1997) 809-824.
  113. H. Nojiri, T. Hamamoto, Z. J. Wang, S. Mitsudo, M. Motokawa, S. Kimura, H. Ohta, A. Ogiwara, O. Fujita and J. Akimitsu: Magnetic Phase Diagram and Antiferromagnetic Resonance in CuGe1-ySiyO3, J. Phys.: Condens Matter, 9 (1997) 1331-1338.
  114. M. Hiroi, T. Hamamoto, M. Sera, H. Nojiri, N. Kobayashi, H. Motokawa, O. Fujita, A. Ogiwara and J. Akimitsu: Unusual Antiferromagnetic State in Si Doped CuGeO3 Single Crystals Studied by Specific Heat Measurements in Magnetic Fields, Phys. Rev. B, 55 No. 55 (1997) R6125-R6128.
  115. N. Ogita, Y. Tsunezumi, T. Yokoo, J. Akimitsu and M. Udagawa: Raman Scattering Investigation of Y2BaNiO5, J. Phys. Soc. Jpn, Vol. 66 No. 3 (1997) 873-876.
  116. Y. Yamamoto, H. Ohta, M. Motokawa, O. Fujita and J. Akimitsu: The Observation of g-Shifts in Spin-Peierls Material CuGeO3 by Submillimeter Wave ESR, J. Phys. Soc. Jpn., Vol. 66 No. 4 (1997) 1115-1123.
  117. K. Motoya, K. Nakaguchi, N. Kayama, K. Inari, J. Akimitsu, K. Izawa and T. Fujita: Magnetic Property of CeNiC2 Studied by Macroscopic and Microscopic Measurements, J. Phys. Soc. Jpn., Vol. 66 No. 4 (1997) 1124-1129.
  118. T. Yokoo, A. Zheludev, M. Nakamura and J. Akimitsu: Ni-Chain Gap Excitations in (NdxY1-x)2BaNiO5: 1-D to 3-D Crossover, Phys. Rev. B, 55 No. 17 (1997) 11516-11520.
  119. H. Takahashi, N. Mo^ri,T. Nakanishi, T. Nagata, M. Uehara, J. Akimitsu and K. Kinoshita: Superconductivity in Quantum Spin-Ladder Compound Ca13.6Sr0.4Cu24O41+d, Physica B, 237-238 (1997) 112-114.
  120. M. Fujita, M. Arai, M. Motokawa, O. Fujita, J. Akimitsu, S. M. Bennington and C. D. Frost: Study on Quantum Magnetic Excitation of CuGeO3 Using Pulsed Neutron Scattering, Physica B, 237-238 (1997) 132-134.
  121. N. Mo^ri, T. Nakanishi, H. Takahashi, T. Nagata, M. Uehara, J. Akimitsu, N. Motoyama, H. Eisaki and S. Uchida: Pressure-Induced Superconductivity in Quantum Spin-Ladder Compound Sr14-xCax Cu24O41+d, Physica B, 239 (1997) 137-140.
  122. T. Nagata, M. Uehara, J. Goto, N. Komiya, J. Akimitsu, N. Motoyama, H. Eisaki, S. Uchida, H. Takahashi, T. Nakanishi and N. Mo^ri: Superconductivity in the Ladder Compound Sr2.5Ca11.5Cu24O41 (single crystal), Physica C, 282-287 (1997) 153-156.
  123. T. Yokoya, H. -D. Kim, A. Ashihara, H. Kumigashira, H. Fujisawa, T. Takahashi, M. Uehara, T. Nagata and J. Akimitsu: High-Resolution Angle-Resolved Photoemission Study of Sr14-xCaxCu24O41 (x = 0 and 6), Physica C, 282-287 (1997) 997-998.
  124. K. Magishi, S. Matsumoto, K. Ishida, Y. Kitaoka, K. Asayama, M. Uehara, T. Nagata and J. Akimitsu: 63Cu NMR Study on Spin Ladder Compounds Sr14-xCaxCu24O41 (x = 9, 11.5), Physica C, 282-287 (1997) 1115-1116.
  125. T. Takahashi, T. Yokoya, A. Ashihara, O. Akaki, H. Fujisawa, A. Chainani, M. Uehara, T. Nagata, J. Akimitsu and H. Tsunetsugu: Angle-Resolved Photoemission Study of the Ladder Compound Sr14Cu24O41, Phys. Rev. B, Vol. 56 No. 13 (1997) 7870-7873.
  126. A. Yamashita, K. Ishii, T. Yokoo, J. Akimitsu, M. Hedo, Y. Inada, Y. O nuki, E. Yamamoto, Y. Haga and R. Kadono: Anomalous Field Dependence of Magnetic Penetration Depth in the Vortex State of CeRu2 Probed by Muon Spin Rotation, Phys. Rev. Lett., 79 No. 19 (1997) 3771-3774.
  127. M. Sera, K. Yamamoto, Z. Hiroi, N. Kobayashi, O. Fujita, A. Ogiwara and J. Akimitsu: Unusual Antiferromagnetic State in the Dimerized Phase in CuGe1-xSixO3 Studied by Lattice Distortion, Phys. Rev. B, 56 No. 22 (1997) 14771-14775.
  128. J. R. Hester, K. Tomimoto, H. Noma, F. P. Okamura and J. Akimitsu: Electron Density in YTiO3, Acta Cryst., B53 (1997) 739-744.
  129. G. Els. P. H. M. van Loosdrecht, P. Lemmens, H. Vonberg, G. Gu¨ntherodt, G. S. Uhrig, O. Fujita, J. Akimitsu, G. Dhalenne and A. Revcolevschi: Observation of Three-Magnon Light Scattering in CuGeO3, Phys. Rev. Lett., Vol. 79 No. 25 (1997) 5138-5141.
  130. K. Hirota, M. Hase, J. Akimitsu, T. Masada, K. Uchinokura and G. Shirane: Magnetic Excitations in the Si Doped Spin-Peierls Compound CuGe1-xSixO3, J. Phys. Soc. Jpn, 67 (1998) 645-650.
  131. S. Kimura, H. Ohta, M. Motokawa, T. Yokoo and J. Akimitsu: S=1/2 Degrees of Freedom in Haldane System Y2BaNiO5 Observed by Submillimeter Wave ESR, J. Phys. Soc. Jpn., 67 No. 7 (1998) 2514-2521.
  132. Y. Kitaoka, K. Magishi, S. Matsumoto, K. Ishida, S. Ohsugi, K. Asayama, M. Uehara, T. Nagata and J. Akimitsu: Systematic NMR Studies of High-Tc and Two-Leg Spin-Ladder Systems, J. Magn. Magn. Mater., 177-181 (1998) 487-492.
  133. I. Yamada, M. Hidaka, M. Nishi and J. Akimitsu: A Possible Relationship between the Newly Found Crystal Structure of CuGeO3 and its Anomalous Dependence of Magnetic Susceptibility and Lattice Parameters on Temperature, J. Magn. Magn. Mater., 177-181 (1998) 703-704.
  134. S. Kimura, H. Ohta, M. Motokawa, T. Yokoo and J. Akimitsu: ESR Study of Haldane System Y2BaNiO5 in Submillimeter Wave Region, J. Magn. Magn. Mater., 177-181 (1998) 624-625.
  135. A. Zheludev, E. Ressouche, S. Maslov, T. Yokoo, S. Raymound and J. Akimitsu: Experimental Measurement of the Staggered Magnetization Curve for a Haldane Spin Chain, Phys. Rev. Lett., Vol. 80 No. 16 (1998) 3630-3633.
  136. S. Katano, O. Fujita, J. Akimitsu, M. Nishi, K. Kakurai and Y. Fujii: Magnetic Phase Diagram of the Spin-Peierls and Antiferromagnetic System CuGe1-xSixO3, Phys. Rev. B, Vol. 57 No. 17 (1998) 10280-10283.
  137. K. Magishi, S. Matsumoto, I. Kitaoka K. Ishida, K. Asayama, M. Uehara, T. Nagata and J. Akimitsu: Spin Gap and Dynamics in Sr14-xCaxCu24O41 Comprising Hole-Doped Two-Leg Spin Ladders: Cu NMR Study on Single Crystals, Phys. Rev. B, Vol. 57 No. 18 (1998) 11533-11544.
  138. M. Sera, M. Hiroi, K. Yamamoto, N. Kobayashi, O. Fujita, A. Ogiwara and J. Akimitsu: Unusual Magnetic Properties of the D +AF and M +AF Phases in CuGe1-xSixO3, J. Phys. Soc. Jpn., Vol. 67 No. 5 (1998) 1544-1547
  139. G. Els, G. S. Uhrig, P. Lemmens, H. Vonberg, P. H. M. van Loosdrecht, G. Gu¨ntherodt, O. Fujita, J. Akimitsu, G. Dhalenne and A. Revcolevschi: Dopant-Bonud Spinons in Cu1-xZnxGeO3, Europhys. Lett, 43 (1998) pp.463-468.
  140. T. Nakanishi, N. Mo^ri, C. Murayama, H. Takahashi, T. Nagata, M. Uehara, J. Akimitsu, K. Kinoshita, N. Motoyama, H. Eisaki and S. Uchida: High-Pressure Transport Properties of the Superconducting Spin-Ladder System Sr14-xCaxCu24O41+d, J. Phys. Soc. Jpn, Vol. 67 No. 7 (1998) 2408-2414.
  141. M. Nishi, K. Kakurai, Y. Fujii, M. Yethiraj, D.A. Tennant, S.E. Nagler, J.A. Fernandez-Baca, O. Fujita and J. Akimitsu: Magnetic Excitation of CuGeO3 under Applied Pressure, Physica B, 241-243 (1998) 537-539.
  142. M. Tamura, M. Sato, T. Den and J. Akimitsu: A New Superconductor with 1222 Structure (Cu1-xMx) Sr2(Y1-yCey)2Cu2Od (M=Ti, V, Cr, Fe, Co, Ga, Ge, Mo, Ce, W and Re), Physica C, Vol. 33 No. 1 & 2 (1998) 1-10.
  143. T. E. Hargreaves, H. Noma, J. Akimitsu, D. F. Brewer, N. E. Hussey and A. L. Thomson: Low-Temprature Specific Heat of the Electron-Doped Superconductor Pr2-xCexCuO4-d, Physica C, Vol. 33 No. 1 & 2 (1998) 33-40
  144. T. Nagata, M. Uehara, J. Goto, J. Akimitsu, N. Motoyama, H. Eisaki, S. Uchida, H. Takahashi, T. Nakanishi and N. Mo^ri: Pressure-Induced Dimensional Crossover and Superconductivity in the Hole-Doped Two-Leg Ladder Compound Sr14-xCaxCu24O41, Phys. Rev. Lett., Vol. 81 No. 5 (1998) 1090-1093.
  145. R. S. Eccleston, M. Uehara, J. Akimitsu, H. Eisaki, N. Motoyama and S. Uchida: The Spin Dynamics of the Spin Ladder, Dimer Chain Material Sr14Cu24O41, Phys. Rev. Lett., Vol. 81 No. 8 (1998) 1702-1705.
  146. H. Nojiri, T. Hamamoto, O. Fujita, J. Akimitsu, S. Takagi and M. Motokawa: ESR Study of the Field-Induced Magnetic Phase of Spin-Peierls CuGeO3 and MEM(TCNQ)2, J. Magn. Magn. Mater., 177-181 (1998) 687-688.
  147. D. Welz, M. Nishi, M. Fujita, K. Kakurai, M. Arai, J. Akimtisu and Y. Fujii: Magnetic Excitations of Dimerized CuGeO3:Continuum Scattering and Interchain Modulation, Physica B, 241-243 (1998) 540-542.
  148. M. Hiroi, T. Hamamoto, M. Sera, H. Nojiri, N. Kobayashi, M. Motokawa, O. Fujita, A. Ogiwara and J. Akimitsu: Magnetic Phase Diagrams of CuGe1-xSixO3 Studied by Specific Heat Measurements, Physica B, 246-247 (1998) 242-245.
  149. Y. Imanaka, N. Miura, H. Nojiri, S. Luther, M.V. Ortenberg, T. Yokoo and J. Akimitsu: ESR Study of the Haldane Gap System Y2BaNiO5in High Magnetic Fields, Physica B, 246-247 (1998) 561-564.
  150. T. Yokoo, S. Raymond, A. Zheludev, and S. Maslov: Magnetic Ordering, Spin Waves, and Haldane-Gap Excitations in (NdxY1-x)2BaNiO5 Linear-Chain Mixed-Spin Antiferromagnets, Phys. Rev.B, vol.58 No.21(1998) 14424-14435.
  151. J. Akimitsu: Superconductivity and Spin Gap State in the Two-Leg Ladder Material Sr2.5Ca11.5Cu24 O41J. Korea Phy. Soc., Vol.33 S6-S10 (1998)
  152. T. Sato, T. Yokoya, T. Takahashi, M. Uehara, T. Nagata, J. Goto and J. Akimitsu: Angle-Resolved Photoemission Study of Superconducting Ladder Compound Sr14-xCaxCu24 O41 J.Phys.Chem Solids, vol.59 No.10-12 (1998) 1912-1916.
  153. T. Nakanishi, N. Mo^ri, C. Murayama, H. Takahashi, T. Nagata, M. Uehara, J. Akimitsu, K. Kinoshita, N. Motoyama, H. Eisaki and S. Uchida: High-Pressure Transport Properies of the Superconducting Spin-Ladder System Sr14-xCaxCu24O41+d, J. Phys. Soc. Jpn., Vol.67 No.7 (1998) pp. 2408-2414.
  154. D.Z.N. Cruz, M. Abbate, H. Tolentino, P. J. Schiling, E. Morikawa, A. Fujimori and J. Akimitsu: Linearly Polarized Cu K-edge Absorption Spectroscopy of CuGeO3: Orbital Population Band Dispersion and Interatomic Interactions, Phys. Rev. B, 59 (1999) 12450.
  155. S. Katano, T. Nagata, J Akimitsu, M. Nishi and K. Kakurai: Spin Gap in the Hole-Doped Spin Ladder System (Sr2.5Ca11.5)Cu24O41 :Neutron Inelastic Scattering Study, Phys.Rev. Lett., vol.82 No.3 (1999) 636-639.
  156. J. Akimitsu: Superconductivity and Magnetic Properties in the Spin Ladder Compound (Sr,Ca)14Cu24O41, Physica B, 259-261(1999) 1030-1031.
  157. S. Katano, T. Nagata, H. Fujino, J. Akimitsu, M. Nishi and K. Kakurai: Pressure Effects on Spin-Gap and Antiferromagnetism in the Hole-Doped Spin Ladder System Sr14-xCaxCu24O41, Physica B, 259-261 (1999) 1046-1047.
  158. J. Akimitsu, T. Nagata, H, Fujino, N. Motoyama, H. Eisaki, S. Uchida, H. Takahashi, T. Nakanishi, N. Mo^ri, M. Nishi, K. Kakurai, S. Katano, M. Hiroi, M. Sera and N. Kobayashi: Spin and Charge Dynamics in the Hole-Doped Two-Leg Ladder Compound Sr14-xCaxCu24O41, Springer Series in Solid-State Sciences, Vol. 125 Physics and Chemistry of Transition-Metal Oxides, ed. H.Fukuyama and Nagaosa (1999) 289-298.
  159. Y Kitaoka, T. Mito, S. Ohsugi, K. Magishi, S. Matsumoto, T. Nagata, J. Akimitsu, N. Motoyama, H. Eisaki and S. Uchida: NMR Probe of Magnetic Order and Spin Correlation in Hole-Doped Ladder Cuprates, Springer Series in Solid-State Sciences, Volume 125 Physics and Chemistry of Transition-Metal Oxides, ed.by H.Fukuyama and Nagaosa (1999) 299-311.
  160. T. Nagata, H. Fujino, J. Akimitsu, M. Nishi, K. Kakurai, S. Katano, M. Hiroi, M. Sera and N. Kobayashi: Antiferromagnetic Ordering in the Spin Singlet State on the Ladder / Chain Materinal: Sr2.5Ca11.5Cu24O41, J.Phys.Soc.Jpn., Vol.68 (1999) 2206-2209.
  161. S. Raymond, T. Yokoo, A. Zheldev, S.E. Nagler, A. Wildes, and J. Akimitsu: Polarized-Neutron Observation of Longitudinal Haldane-Gap Excitations in Nd2BaNiO5, Phys.Rev.Lett., vol.82 (1999) No.11 2382-2385.
  162. T. Nagata, H. Fujino, K. Ohishi, J. Akimitsu, S. Katano, M. Nishi and K. Kakurai: Coexistence of the Spin Liquid State and the Magnetic Ordering in the Spin Ladder Compound; Sr14-xCaxCu24O41, J. Phys.Chem.Solids, 60 (1999) 1039-1043.
  163. M. Nishi, K. Kakurai, Y. Fujii, S, Katano, J. Akimitsu, M. Yethiraj and J.A. Fernandez-Baca: New Aspects of the b*-LA Phonon of CuGeO3, J.Phys.Chem.Solids, 60 (1999) 1109-1111.
  164. H. Nojiri, H. Ohta, S. Okubo, O. Fujita, J. Akimitsu and M. Motokawa: Submillimeter Wave ESR Study of Spin Gap Excitations in CuGeO3, J. Phys. Soc. Jpn., vol.68 (1999) 3417-3423.
  165. S. Ohsugi, K. Magishi, S.Matsumoto, Y. Kitaoka, T. Nagata and J. Akimitsu: Magnetic Order in the Hole-Doped Two-Leg Ladder Compound Sr2.5Ca11.5Cu24O41:Evidence from Cu-NMR and -NQR Studied on a Single Crystal, Phys. Rev. Lett., vol.82 No.23 (1999) 4715-4718.
  166. N. Ogita, Y. Tsunezumi, J. Akimitsu and M. Udagawa: Raman scattering study of Cu(Ge1-xSix)O3, Physica B, 263-264 (1999) 832-834.