Papers (Last update: August 5, 2008)

(1) Q. Li and X. Hu:
"First-principles study of Ni₂P (0001) surfaces",
Phys. Rev. B vol. 74, 035414 (2006).

(2) Z.-C. Tu and X. Hu:
"Elasticity and piezoelectricity of zinc oxide crystals, single layers, and possible single-walled nanotubes",
Phys. Rev. B vol. 74, 035434 (2006).

(3) Z.-C. Tu, Q. Li and X. Hu:
"Theoretical determination of the necessary conditions for the formation of ZnO nanorings and nanohelices",
Phys. Rev. B vol. 73, 115402 (2006).

(4) A. Tanaka and X. Hu:
"Effective field theory with a θ-vacua structure for two-dimensional spin systems",
Phys. Rev. B vol. 74, 140407(R) (2006).

(5) Y. Nonomura and X. Hu:
"Energy landscape and shear modulus of interlayer Josephson vortex systems",
Phys. Rev. B vol. 74, 024504 (2006).

(6) Y. Nonomura and X. Hu:
"Screening effect in ground state of Josephson vortex systems",
Physica C vol. 445-448, p. 198 (2006).

(7) M. Hase, M. Kohno, H. Kitazawa, N. Tsujii, O. Suzuki, K. Ozawa, G. Kido, M. Imai, and X. Hu:
"Studies of magnetization plateau in two cuprates",
J. Phys.: Conf. Ser. vol. 51, p. 159 (2006).

(8) M. Hase, M. Kohno, H. Kitazawa, O. Suzuki, K. Ozawa, G. Kido, M. Imai, and X. Hu :
"Magnetism of Cu₂CdB₂O₆: Quantum spin system having a nearly singlet state and antiferromagnetic long-range order",
J. Appl. Phys. vol. 99, 08H504 (2006).

(9) M. Hase, M. Kohno, H. Kitazawa, O. Suzuki, K. Ozawa, G. Kido, M. Imai, and X. Hu:
"Magnetic Properties of Low-Dimensional Quantum Spin System Cu₂CdB₂O₆",
AIP Conf. Proc. vol. 850, 1041 (2006).

(10) M. Hase, M. Kohno, H. Kitazawa, N. Tsuji, O. Suzuki, K. Ozawa, G. Kido, M. Imai, and X. Hu:
"1/3 magnetization plateau observed in the spin-1/2 trimer chain compound Cu₃(P₂O₆OH)₂",
Phys. Rev. B vol. 73, 104419 (2006).

(1) X.-G. Wan, M. Kohno, and X. Hu:
"Robust half-metallic character and large oxygen magnetism in a perovskite cuprate",
Phys. Rev. Lett. vol. 95, 146602 (2005).

(2) X.-G. Wan, M. Kohno, and X. Hu:
"Orbital order and ferrimagnetic properties of the new compound Sr₈CaRe₃Cu₄O₂₄",
Phys. Rev. Lett. vol. 94, 087205 (2005).

(3) A. Tanaka and X. Hu:
"Many-body spin Berry phases emerging from the π-flux state: Competition between antiferromagnetism and the valence-bond-solid state",
Phys. Rev. Lett. vol. 95, 036402 (2005).

(4) Y. Nonomura and X. Hu:
"Reply to Comment on 'Effects of point defects on the phase diagram of vortex states in high-T_c superconductors in the B//c axis'",
Phys. Rev. Lett. vol. 94, 219704 (2005).

(5) K. Inomata, S. Sato, K. Nakajima, A. Tanaka, Y. Takano, H. B. Wang, M. Nagao, S.Kawabata, and T. Hatano:
"Macroscopic quantum tunneling in a d-wave high-T_c superconductor",
Phys. Rev. Lett. vol. 95, 107005 (2005).

(6) B.-Y. Zhu, H.-B. Wang, S.-M. Kim, S. Urayama, T. Hatano, and X. Hu:
"Periodic oscillations, peak-splitting and phase transitions of Josephson vortex flow resistance in Bi₂Sr₂CaCu₂O_8+δ",
Phys. Rev. B vol. 72, 174514 (2005).

(7) Z.-C. Tu and X. Hu:
"Molecular motor constructed from a double-walled carbon nanotube driven by axially varying voltage",
Phys. Rev. B vol. 72, 0334404 (2005).

(8) C. Yasuda, A. Tanaka, and X. Hu:
"Competition between hidden spin and charge orderings in stripe phase",
Phys. Rev. B vol. 71, 140507 (2005).

(9) Q-.M. Nie, M.-B. Luo, Q.-H. Chen, and X. Hu:
"Elastic theory for the melting transition of vortex lattice in magnetic field perpendicular to the anisotropic axis",
Europhys. Lett. vol. 71, p. 445 (2005).

(10) Q.-M. Nie, M.-B. Luo, Q.-H. Chen, and X. Hu:
"Elastic-theory study on the melting transition of flux line lattice induced by magnetic fields perpendicular to the anisotropic axis ",
Int. J. Mod. Phys. B vol. 19, p. 475 (2005).

(11) M. Kohno, X.-G. Wan, and X. Hu:
"Theoretical study on ferrimagnetism of new material Sr₈CaRe₃Cu₄O₂₄ ",
J. Phys. Soc. Jpn. Suppl. vol. 74, p. 98 (2005).

(12) M. Kohno, X.-G. Wan, and X. Hu:
"Magnetic and electronic properties of new ferrimagnet Sr₈CaRe₃Cu₄O₂₄ ",
Mat. Sci.-Poland, vol. 23, p. 375 (2005).

(13) Y. Nonomura, X. Hu, and D. R. Nelson:
"Numerical study on vortex states in three dimensions with point pins: Effect of a single twin plane",
Prog. Theor. Phys. Suppl. vol. 157, p. 143 (2005).

(14) X. Hu, M.-B. Luo, and Y.-Q. Ma:
"Density functional theory for freezing transition of vortex-line liquid with periodic layer pinning",
Phys. Rev. B, vol. 72, 174503 (2005).

(15) M. Hase, M. Kohno, H. Kitazawa, O. Suzuki, K. Ozawa, G. Kido, M. Imai, and X. Hu:
"Coexistence of a nearly spin-singlet state and anitiferromagnetic long-range order in quantum spin system Cu₂CdB₂O₆",
Phys. Rev. B vol. 72, 172412 (2005).

(16) Q.-H. Chen and X. Hu:
"In-plane current driven Josephson-vortex lattice in high-T_c cuprates",
Int. J. Mod. Phys. B vol. 19, p. 439 (2005).

(17) J.-L. Zhu, S. Hu, Z.-S. Dai, and X. Hu:
"Three-electron spectra and generalized Hund's rule in nanorings ",
Phys. Rev. B vol. 72, 075411 (2005).

(18) J.-L. Zhu, H.-F. Song, and X. Hu:
"Transverse-field and defect-azimuth effects in achiral carbon nanotubes",
J. Phys. Con. Mat. vol. 17, p. 4629 (2005).

(19) X.-G. Wan, M. Kohno, and X. Hu:
"First principles calculations for the new ferrimagnet Sr₈CaRe₃Cu₄O₂₄",
Tran. Mater. Res. Jpn vol. 30, p.910 (2005).

(20) Yu. I. Latyshev, A. P. Orlov, V. N. Pavlenko, and X. Hu:
"Josephson vortex lattice melting in Bi-2212 probed by commensurate oscillations of Josephson flux-flow",
JETP Lett., vol. 82, p.232 (2005).

(1) X. Hu and Q.-H. Chen:
"Comment on "Vortex liquid crystal in anisotropic type II superconductors"",
Phys. Rev. Lett. vol. 92, 209701 (2004).

(2) Q.-M. Nie, M.-B. Luo, Q.-H. Chen, and X. Hu :
" Disorder driven melting of moving vortex matter in layered superconductors",
Int. J. Mod. Phys. B vol. 18, p. 2476 (2004).

(3) Q.-H. Chen, M.-B. Luo, Q.-M. Nie, and X. Hu:
"Numerical evidence for Lorentz-force independent dissipation in layered superconductors",
Physica C vol. 412-414, p. 422 (2004).

(4) Q.-H. Chen and X. Hu:
"Numerical observation of the washboard noise of a driven vortex lattice in high-T_c superconductors", Physica C vol. 408-410, p. 558 (2004).

(5) C. Yasuda, A. Tanaka, and X. Hu:
"Fluctuating charge stripes in an antiferromagnetic background",
Physica C vol. 408-410, p. 447 (2004).

(6) C. Yasuda, A. Tanaka, and X. Hu:
"Quantum Monte Carlo study of fluctuating charge stripes in high-T_c superconductors",
J. Magn. Magn. Mater. vol. 272-276, p. 193 (2004).

(7) M. Kohno, X. Hu, and M. Tachiki:
"Charge Dynamics in Doped Mott Insulators",
Physica C vol. 412-414, p. 82 (2004).

(8) Y. Nonomura and X. Hu:
"Phase transition between two kinds of flux-line lattice in high-T_c superconductors in a tilted field",
Physica C vol. 412-414, p. 385 (2004).

(9) Y. Nonomura and X. Hu:
"On similarity of phase diagrams of vortex states in presence of point or columnar defects",
Physica C vol. 408-410, p. 529 (2004).

(10) Y. Nonomura and X. Hu:
"Possible Bragg-Bose glass phase in vortex states of high-T_c superconductors with sparse and weak columnar defects",
Europhys. Lett. vol. 65, p. 533 (2004).

(11) X. Hu and M. Tachiki:
"Decoupled two-dimensional superconductivity and continuous melting transitions in layered superconductors immersed in a parallel magnetic field",
Phys. Rev. B vol. 70, 064506 (2004).

(12) Y. Narumi, K. Kindo, M. Hagiwara, H. Nakano, A. Kawaguchi, K. Okunishi, and M. Kohno:
"High-field magnetization of S = 1 antiferromagnetic bond-alternating chain compounds",
Phys. Rev. B vol. 69, 174405 (2004).

(13) M. Hagiwara, Y. Narumi, K. Kindo, H. Nakano, M. Kohno, R. Sato, and M. Takahashi:
"Magnetic properties of S=1 antiferromagnetic chains with bond alternation",
J. Magn. Magn. Mater. vol. 272-276, p. 876 (2004).

(14) Y. Takano, T. Hatano, S. Kawakami, M. Ohmori, S. Ikeda, M. Nagao, K. Inomata, K. S. Yun, S. Ishii,
A. Tanaka, T. Yamashita, and M. Tachiki:
"Probing the order parameter using cross-whisker junction with adjustable Josephson characteristics",
Physica C vol. 408-410, p. 296 (2004).

(15) T. Yorozu and X. Hu:
"Micromagnetic analyses of reversal process with twisted wall structure",
J. Appl. Phys. vol. 95, p. 5633 (2004).

(1) Q.-H. Chen and X. Hu:
"Nonequilibrium phase transitions of vortex matter in three-dimensional layered superconductors"
Phys. Rev. Lett. vol. 90, 117005 (2003).

(2) T. Hikihara, T. Momoi, and X. Hu:
"Spin-chirality duality in a spin ladder with four-spin cyclic exchange"
Phys. Rev. Lett. vol. 90, 087204 (2003).

(3) A. Tanaka and X. Hu:
"Possible spin triplet superconductivity in Na_xCoO₂/yH₂O"
Phys. Rev. Lett. vol. 91, 257006 (2003).

(4) Q.-H. Chen and X. Hu:
"Effect of disorder on driven vortex matter in high-T_c superconductors"
Int J. Mod. Phys. B vol. 17, p. 3433 (2003).

(5) Q.-H. Chen, A. Tanaka and X. Hu:
"Evidence for finite temperature glass transition in two dimensions"
Physica B vol. 329-333, p. 1413 (2003).

(6) Q.-H. Chen and X. Hu:
"Dynamical phase diagram of driven vortices in high-T_c superconductors"
J. Low Temp. Phys. vol. 131, p. 951 (2003).

(7) T. Hikihara and X. Hu:
"Numerical renormalization study on magnetic properties of edge states in carbon nanotubes"
Physica B vol. 329-333, p. 1166 (2003).

(8) T. Hikihara, X. Hu, H.-H. Lin, and C.-Y. Mou:
"Ground-state properties of nanographite systems with zigzag-shaped edges"
Phys. Rev. B vol. 68, 035432 (2003)

(9) A. Tanaka and X. Hu:
"Stripe-superconductor duality and the emergence of nodal fermions"
J. Low Temp. Phys. vol. 131, p. 203 (2003).

(10) A. Tanaka and X. Hu:
"Possible route from stripes and other spatially structured many-electron states to superconductivity"
Int. J. Mod. Phys. B vol. 17, p. 3544 (2003).

(11) A. Tanaka and X. Hu:
"Role of antiferromagnetic fluctuations on charge ordering and superconductivity as viewed through quantal phases"
Physica C vol. 388-389, p. 35 (2003).

(12) Y. Nonomura and X. Hu:
"Bragg-Bose glass phase in vortex states of high-T_c superconductors with sparse columnar defects"
Int. J. Mod. Phys. B vol. 17, p. 3427 (2003).

(13) Y. Nonomura and X. Hu:
"Evidence of Bragg glass phase in high-T_c vortex states with columnar defects"
Physica C vol. 388-389, p. 643 (2003).

(14) Y. Nonomura and X. Hu:
"Numerical study on the vortex states of high-T_c superconductors with point defects: Novel phases in the vortex liquid region"
J. Low Temp. Phys. vol. 131, p. 987 (2003).

(15) X. Hu:
"Bicritical phenomena and scaling properties of O(5) model"
Physica A vol. 321, p. 71 (2003).

(16) X. Hu:
"Pinning effects in vortex states of high-T_c superconductors: Monte Carlo simulations"
J. Low Temp. Phys. vol. 131, p. 979 (2003).

(17) X. Hu:
"Effects of thermal fluctuations and magnetic field in the SO(5) theory"
Physica C vol. 388-389, p. 61 (2003).

(18) X. Hu:
"New developments in theory of vortex states in type II supercondutors"
Mod. Phys. Lett. B vol. 17, p. 725 (2003).

(19) X. Hu and Q.-H. Chen:
"Computer simulations on the melting phenomena of quantized flux lines in type II superconductors"
Int. J. Mod. Phys. B vol. 17, p. 55 (2003).

(20) X. Hu and M. Tachiki:
"A KT phase of interlayer Josephson vortex systems in high-T_c superconductors"
Int. J. Mod. Phys. B vol. 17, p. 3430 (2003).

(21) T. Momoi, T. Hikihara, M. Nakamura, and X. Hu:
"Scalar chiral ground states of spin ladders with four-spin exchanges"
Phys. Rev. B vol. 67, 174410 (2003).

(22) J. L. Zhu, X. Q. Yu, Z. S. Dai and X. Hu:
"Aharonov-Bohm oscillation modes in double-barrier nanorings"
Phys. Rev. B vol. 67, 075404 (2003).

(23) X. Yu, J. L. Zhu and X. Hu:
"Controllable electronic structures and related properties in a double-barrier nanoring"
Appl. Phys. Lett. vol. 82, p. 4567 (2003).

(24) J. L. Zhu, Z. S. Dai and X. Hu:
"Two electrons in one-dimensional nanorings: Exact solutions and interaction energies"
Phys. Rev. B vol. 68, 045324 (2003).

(1) A. Tanaka and X. Hu:
"Quantal Phases, Disorder Effects, and Superconductivity in Spin-Peierls Systems"
Phys. Rev. Lett. vol. 88, 127004 (2002).

(2) X. Hu:
"Reply to Comment on "Bicritical and tetracritical phenomena and scaling properties of the SO(5) theory""
Phys. Rev. Lett. vol. 88, 059704 (2002).

(3) T. Hikihara:
"Ground State Phase Diagram of Frustrated Antiferromagnetic S=1 Chain with Uniaxial Single-Ion-Type Anisotropy"
J. Phys. Soc. Jpn. vol. 71, p. 319 (2002).

(4) T. Hikihara:
"Ground State Phase Diagram of Frustrated Anisotropic Quantum Spin Chains "
Prog. Theor. Phys. Suppl. vol. 145, p. 58 (2002).

(5) M. Kohno and M. Imada:
"Systematic improvement of wavefunctions in the variational Monte Carlo method for the t-J model"
J. Phys. Chem. Sol. vol. 63, p. 1563 (2002).

(1) Y. Nonomura and X. Hu:
"Effects of point defects on the phase diagram of vortex states in high-T_c superconductors in the B//c axis"
Phys. Rev. Lett. vol. 86, p. 5140 (2001).

(2) X. Hu:
"Bicritical and tetracritical phenomena and scaling properties of the SO(5) theory"
Phys. Rev. Lett. vol. 87, 057004 (2001).

(3) Y. Narumi, M. Hagiwara, M. Kohno, and K. Kindo:
"Evidence for the Singlet-Dimer Ground State in an S=1 Antiferromagnetic Bond Alternating Chain"
Phys. Rev. Lett. vol. 86, p. 324 (2001).

(4) A. Tanaka and X. Hu:
"Numerical study of the flux lattice melting transition in 2D superconductors"
Physica C vol. 357-360, p. 438 (2001).

(5) Y. Nonomura and X. Hu:
"Monte Carlo simulations of vortex states in high-T_c superconductors with point defects"
Physica C vol. 357-360, p. 422 (2001).

(6) X. Hu:
"Phase diagrams and bicritical scaling behavior of the SO(5) theory"
Physica C vol. 364-365, p. 17 (2001).

(7) M. Kohno and M. Imada:
"Influence of a flat deispersion on the superconducting instability in doped Mott insulators"
J. Phys. Chem. Sol. vol. 62, p. 225 (2001).

(1) X. Hu and M. Tachiki:
"Possible tricritical point in phase diagrams of interlayer Josephson-vortex systems in high-T_c superconductors"
Phys. Rev. Lett. vol. 85, p. 2577 (2000).

(2) X. Hu and M. Tachiki:
"Reply to Comment on "Structure and phase transition of Josephson vortices in anisotropic high-T_c superconductors""
Phys. Rev. Lett. vol. 85, p. 2652 (2000).

(3) M. Imada and M. Kohno:
"Superconductivity from Flat Dispersion Designed in Doped Mott Insulators"
Phys. Rev. Lett. vol. 84, p. 143 (2000).

(4) Y. Nonomura and X. Hu:
"Simulated phase diagram of high-T_c vortex systems with point pins"
Physica C vol. 341-348, p. 1307 (2000).

(5) Y. Nonomura and X. Hu:
"Inter-layer phase difference and flux-line entanglement at first-order melting transition of high-T_c vortex systems"
Physica C vol. 341-348, p. 1305 (2000).

(6) Y. Nonomura and X. Hu:
"Inter-layer phase difference of HTSC in B//c: Monte Carlo simulations"
Physica B vol. 284-288, p. 435 (2000).

(7) X. Hu:
"Magnetic-field-induced first-order N to AF transition: a prediction by the SO(5) theory"
Physica C vol. 341-348, p. 239 (2000).

(8) X. Hu:
"Spin-gap phenomenon by an SO(5) model"
Physica B vol. 284-288, p. 461 (2000).

(9) X. Hu and M. Tachiki:
"Critical anisotropy in Josephson-vortex systems induced by magnetic fields along the ab plane of high-T_c superconductors"
Physica C vol. 341-348, p. 961 (2000).

(10) M. Kohno and M. Imada:
"Enhancement of Pairing Correlations and Spin Gap through Suppression of Single-Particle Dispersion in One-Dimensional Models"
J. Phys. Soc. Jpn. vol. 69, p. 25 (2000).

(11) M. Imada, M. Kohno, and H. Tsunetsugu:
"How are spin gap and pairing correlations of doped Mott insulators controlled by geometry of the lattice structure?"
Physica B vol. 280, p. 303 (2000).

(12) M. Machida, T. Koyama, A. Tanaka and M. Tachiki:
"Collective dynamics of Josephson vortices in intrinsic Josephson junctions: exploration of in-phase locked superradiant vortex flow state"
Physica C vol. 330, p. 85 (2000).

(13) M. Machida, T. Koyama, A. Tanaka and M. Tachiki:
"Theory of the superconducting phase and charge dynamics in intrinsic Josephson-junction systems: microscopic foundation for longitudinal Josephson plasma and phenomenological dynamical equations"
Physica C vol. 331, p. 85 (2000).

(1) X. Hu, T. Koyama, and M. Tachiki:
"Phase diagram of a superconducting and antiferromagnetic system with SO(5) symmetry"
Phys. Rev. Lett. vol. 82, p. 2568 (1999).

(2) Y. Nonomura, X. Hu, and M. Tachiki:
"Flux-line entanglement as the mechanism of melting transition in high-temperature superconductors in a magnetic field"
Phys. Rev. B vol. 59, p. R11657 (1999).

(3) Y. Nonomura and X. Hu:
"Flux-line entanglement as the mechanism of FLL-melting transition in anisotropic HTSC"
J. Low Temp. Phys. vol. 117, 1447 (1999).

(4) X. Hu:
"Antiferromagnetism and superconductivity transitions with SO(5) symmetry"
J. Low Temp. Phys. vol. 117, p. 289 (1999).

(5) X. Hu and M. Tachiki:
"Monte Carlo simulation on the first-order flux lattice melting in high-T_c superconductors"
Advances in Superconductivity XI (Springer-Verlag Tokyo), p. 579 (1999).

(6) T. Yorozu and X. Hu:
"Magnetization hystereses in trilayer systems with an in-plane component defect"
J. Appl. Phys. vol. 86, p. 1581 (1999).

(7) A. Tanaka and M. Machida:
"Berry phase from vortex dynamics in BCS superconductors revisited"
Physica C vol. 313, p. 141 (1999).

(1) X. Hu and M. Tachiki:
"Structure and phase transition of Josephson vortices in anisotropic high-T_c superconductors"
Phys. Rev. Lett. vol. 80, p. 4044 (1998).

(2) A. Tanaka and M. Machida:
"Comment on "Localization and metal-insulator transition in multilayered quantum Hall structures""
Phys. Rev. Lett. vol. 81, p.1746 (1998).

(3) M. Hagiwara, Y. Narumi, K. Kindo, M. Kohno, H. Nakano, R. Sato, and M. Takahashi:
"Experimental Verification of the Gapless Point in the S=1 Antiferromagnetic Bond Alternating Chain"
Phys. Rev. Lett. vol. 80, p. 1312 (1998).

(4) X. Hu, S. Miyashita and M. Tachiki:
"Monte Carlo simulation on the phase transition in the flux states of high-T_c superconductors: B//c axis"
Phys. Rev. B vol. 58, p.3438 (1998).

(5) X. Hu and Y. Kawazoe:
"Micromagnetic study on ultrathin magnetic films"
Comp. Mater. Sci. vol. 10, p. 198 (1998).

(6) M. Tachiki, S. E. Shafranjuk, and X. Hu:
"Vortex lattice structure and Josephson plasma in high-T_c superconductors"
Chinese J. Phys. vol. 36, p. 171 (1998).

(7) T. Yorozu and X. Hu:
"Magnetization of a trilayer structure with alternate in-plane and out-of-plane anisotropies"
J. Appl. Phys. vol. 84, p. 3278 (1998).

(8) M. Kohno, M. Takahashi, and M. Hagiwara:
"Low-temperature properties of the spin-1 antiferromagnetic Heisenberg chain with bond alternation"
Phys. Rev. B vol. 57, p. 1046 (1998).

(9) A. Tanaka and M. Machida:
"Nonabelian chiral anomaly and the spin-gap in one-dimensional interacting electron systems"
J. Phys. Soc. Jpn. vol. 67, p. 748 (1998).

(10) Y. Nonomura:
"New quantum Monte Carlo study of quantum critical phenomena with Trotter-number-dependent finite-size scaling and non-equilibrium relaxation"
J. Phys. A vol. 31, p. 7939 (1998).

(11) Y. Nonomura:
"New quantum Monte Carlo approach to ground-state phase transitions in quantum spin systems"
J. Phys. Soc. Jpn. vol. 67, p. 5 (1998).

(1) X. Hu, S. Miyashita and M. Tachiki:
"Delta-function peak in the specific heat of high-T_c superconductors: Monte Carlo simulation"
Phys. Rev. Lett. vol. 79, p. 3498 (1997).

(2) X. Hu, S. Miyashita and M. Tachiki:
"Simulation for the first-order vortex-lattice melting transition in high-T_c superconductors"
Physica C vol. 282-287, p. 2057 (1997).

(3) X. Hu:
"Magnetization reversal and coercive force in ultrathin films with perpendicular surface anisotropy: micromagnetic theory"
Phys. Rev. B vol. 55, p. 8382 (1997).

(4) M. Kohno:
"Aspects of the ground state of the U=∞ Hubbard ladder"
Phys. Rev. B vol. 56, p. 15015 (1997).

(5) M. Kohno and M. Takahashi:
"Magnetization process of the spin-1/2 XXZ models on square and cubic lattices"
Phys. Rev. B vol. 56, p. 3212 (1997).

(6) M. Kohno:
"Ground-state properties of the two-dimensional t-J model"
Phys. Rev. B vol. 55, p. 1435 (1997).

(7) M. Machida, A. Tanaka, H. Kaburaki and M. Tachiki:
"Direct numerical experiments for interlayer Josephson plasma and fluctuation of vortices in layered high-T_c superconductors"
Physica C vol. 288, p. 199 (1997).

(8) M. Machida, M. Tachiki, T. Koyama, S. Takahashi and A. Tanaka:
"Direct numerical experiments on vortex dynamics and superconducting plasma in layered high-T_c superconductors", Advances in Superconductivity IX (Springer-Verlag Tokyo), p. 76 (1997).

(9) Y. Nonomura:
"Quantum Monte Carlo study of phase diagram and critical phenomena of the quantum Heisenberg Mattis model in two dimensions"
J. Phys. Soc. Jpn. vol. 66, p. 2638 (1997).

(10) Z. Honda, Y. Nonomura, and K. Katsumata:
"Magnetic susceptibility of [Cu₂(C₂O₄)(C₁₀H₈N₂)₂](NO₃)₂ --- a candidate for a spin ladder compound"
J. Phys. Soc. Jpn. vol. 66, p. 3689 (1997).

(11) Y. Ozeki, Y. Nonomura, and K. Hukushima:
"Symmetry in the phase diagram of the site-random Ising spin glass model in two dimensions"
J. Phys. Soc. Jpn. vol. 66, p. 1165 (1997).

(12) K. Hukushima, Y. Nonomura, Y. Ozeki, and H. Takayama:
"Phase diagram of three-dimensional site-random Ising model"
J. Phys. Soc. Jpn. vol. 66, p. 215 (1997).

(1) X. Hu, R.-B. Tao, and Y. Kawazoe:
"Scaling properties of spin-reorientation transitions in magnetic thin films with surface anisotropy"
Phys. Rev. B vol. 54, p. 65 (1996).

(2) X. Hu and Y. Kawazoe:
"New estimation of surface anisotropy"
J. Appl. Phys. vol. 79, p. 5842 (1996).

(3) X. Hu and Y. Kawazoe:
"Surface anisotropy and spin-reorientation transitions in ultrathin magnetic films"
IEEE Trans. Magn. vol. 32, p. 4561 (1996).

(4) X. Hu and Y. Kawazoe:
"Study of coupled ferromagnetic thin film and semi-infinite bulk"
J. Magn. Magn. Mater. vol. 153, p. 380 (1996).

(5) Y. Nonomura:
"Ground-state phase diagram of the two-dimensional quantum Heisenberg Mattis model"
J. Phys. Soc. Jpn. vol. 65, p. 402 (1996).

(6) H. Nishimori and Y. Nonomura:
"Quantum Effects in Neural Networks"
J. Phys. Soc. Jpn. vol. 65, p. 3780 (1996).

(7) T. Kadowaki, Y. Nonomura, and H. Nishimori:
"Exact ground-state energy of the Ising spin glass on strips"
J. Phys. Soc. Jpn. vol. 65, p. 1609 (1996).