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Fermi Surface of 3d1 Perovskite CaVO3 near the Mott Transition
[I.H. Inoue, C. Bergemann, I. Hase, and S.R. Julian: Physical Review Letters 88, 236403 (2002) [ PDF]]

Possible coexistence of superconductivity and static SDW stripes in the two-dimensional Hubbard model
[Mitake Miyazaki, Kunihiko Yamaji, Takashi Yanagisawa: J. Phys. Chem. Solids 63, 1403-1407 (2002) [ PDF]]

Stripes and superconductivity in high-Tc superconductors
[T. Yanagisawa, Soh Koike, Mitake Miyazaki, Kunihiko Yamaji: J. Phys. Chem. Solids 63, 1379-1383 (2002) [ PDF]]

Bulk single-crystal growth of strontium ruthenates by a floating-zone method
[S.I. Ikeda, U. Azuma, N. Shirakawa, Y. Nishihara and Y. Maeno: J. Crystal Growth 237-239, 787 (2002) [ PDF]]

Electronic structure of superconducting compounds h-ZrRuX (X=P,As,Si)
[Izumi Hase: Phys. Rev. B65, 174507 (2002) [ PDF]]

Disorder-induced vortex-phase transition and its evolution with oxygen doping in Bi1.7Pb0.3Sr2CaCu2Oy crystals
[Y. Yamaguchi, N. Shirakawa, G. Rajaram, K. Oka, A. Mumtaz, H. Obara, T. Nakagawa, and H. Bando: Physica C 361, 244 (2001).] [ PDF]

Stripe formation in High-Tc superconductors
[T. Yanagisawa, S. Koike, M. Miyazaki and K. Yamaji: J. Phys. Condensed Matter 14 (2002) 21]
[ PDF]

  • The incommensurability is proportional to the hole density as suggested by neutron scattering measurements.

    Magnetic Field-Tuned Quantum Criticality in the Metallic Ruthenate Sr3Ru2O7
    [S.A.Grigera, R.S.Berry, A.J.Schofield, M.Chiao, S.R.Julian, G.G.Lonzarich, S.Ikeda, Y.Maeno, A.J.Millis, A.P.Mackenzie: Science 294, 329 (2001).]

    Origin of superconductivity and determination of pairing symmetry exactly in the weak coupling limit for the three-band d-p model
    [S. Koikegami and T. Yanagisawa: J. Phys. Soc. Jpn. 70 (2001) 3499; 71 (2002) 671 (E)]

    Spin modulation and coexistence of SC and Stripes
    [M. Miyazaki, K. Yamaji and T. Yanagisawa.: J. Phys. Chem. Solids 63, 1403 (2002).] [PDF]
    [T. Yanagisawa, S. Koike, M. Miyazaki and K. Yamaji: J. Phys. Chem. Solids 63, 1379 (2002).] (ISSP 2001 Kashiwa) [PDF]

  • The SC condensation energy (SC order parameter) is reduced in the underdoped region due to spin modulations in agreement with the phase diagram for high-Tc cuprates.

    de Haas-van Alphen Effect in the Two-Dimensional and Quasi-Two-Dimensional Systems
    [K. Kishigi and Y. Hasegawa: Phys. Rev. B65, 205405 (2002). ]

    Vortex creep characteristics via magnetic relaxation of Bi2Sr2CaCu2O9+x crystals
    [Y. Yamaguchi, G. Rajaram, N. Shirakawa, A. Mumtaz, H. Obara, T. Nakagawa, and H. Bando: Physica C 361, 303 (2001).] [PDF ]

    Phase diagram of high-Tc cuprates.
    Antiferromganetism and Spin-Correlation induced Superconductivity!
    [T. Yanagisawa, S. Koike and K. Yamaji: Phys. Rev. B64, 184509 (2001)] [PDF]

    Evidence for Anisotropic Cooper pairing in electron-doped high-Tc cuprate NdCeCuO!
    Agreement between Far-infrared measurements and Theoretical analysis!
    [T. Yanagisawa, S. Koikegami, H. Shibata, S. Kashiwaya, et al.: J. Phys. Soc. Jpn. 70 (2001) 2833.] [PDF]

    Theory of anomalous band nesting in MgB2.
    [I. Hase and K. Yamaji: J. Phys. Soc. Jpn. 70 (2001) 2376.]

    New mechanism of superconductivity for MgB2.
    [K. Yamaji: J. Phys. Soc. Jpn. 70 (2001) 1476.]

    A new method of growing the single phase crystal of Mo oxides.
    [N. Shirakawa et al.: Jpn. J. Appl. Phys. 40 (2001) 741.]

    4-th position in GFLOPS TACC Ranking (May)
    (Our original programs mark 16GFLOPS as the mean value.)
    (*TACC= Tsukuba Advanced Computing Center)

    Theory of coexistence of CDW and SDW for the extended Hubbard model.
    [K. Kishigi: J. Phys. Soc. Jpn. 70 (2001) 784.]

    Papers of Condensed-Matter Theory Group