発表論文

[2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 ]


2009

Supersolid state in fermionic optical lattice systems
A. Koga, T. Higashiyama, K. Inaba, S. Suga, and N. Kawakami,
Phys. Rev. A 79, 013607 (2009).

2008

Frustration effects in an anisotropic checkerboard lattice Hubbard model
T. Yoshioka, A. Koga, and N. Kawakami
Phys. Rev. B 78, 165113 (2008).
Mott Transition in the Hubbard Model on Checkerboard Lattice
T. Yoshioka, A. Koga, and N. Kawakami
J. Phys. Soc. Jpn. 77, 104702 (2008).
Three-Orbital Kondo Effect in Single Quantum Dot System with Plural Electrons
T. Kita, R. Sakano, T. Ohashi, and S. Suga
J. Phys. Soc. Jpn. 77, 094707 (2008).
Tomonaga-Luttinger liquid in quasi-one-dimensional antiferromagnet BaCo2V2O8 in magnetic fields
S. Suga
J. Phys. Soc. Jpn. 77, 074717-1-4 (2008).
Supersolid state of ultracold fermions in optical lattice
A. Koga, T. Higashiyama, K. Inaba, S. Suga, and N.Kawakami
J. Phys. Soc. Jpn. 77, 073602 (2008).
Multiband-driven superfluid-insulator transition of fermionic atoms in optical lattices: A dynamical mean-field-theory study
Takuji Higashiyama, Kensuke Inaba, and Sei-ichiro Suga
Phys. Rev. A 77, 043624 (2008).

2007

Metal-Insulator Transition in the Two-Orbital Hubbard Model at Fractional Band Fillings: Self-Energy Functional Approach
Kensuke Inaba and Akihisa Koga
J. Phys. Soc. Jpn., Vol.76, No.9, 094712, (2007).
Field-induced Tomonaga-Luttinger liquid of a quasi-one-dimensional S=1 antiferromagnet (Review Article)
M. Hagiwara, H. Tsujii, C. R. Rotundu, B. Andraka, Y. Takano, T. Suzuki, and S. Suga
Mod. Phys. Lett. B 21, 965 (2007).
Thermopower of Multiorbital Kondo Effect via Single Quantum Dot System at Finite Temperatures
Rui Sakano, Tomoko Kita and Norio Kawakami
J. Phys. Soc. Jpn., Vol.76, No.7, 074709, (2007).
Transport properties of the orbital Kondo effect via quantum dot systems with plural electrons
R. Sakano, T. Kita, T. Ohashi, S. Suga, and N. Kawakami
Phys. Stat. Sol. (a) 204, No.2, 492-495 (2007).
Proceedings
Magnetic correlations around the Mott transition in the Kagome lattice Hubbard model
T. Ohashi, S. Suga, N. Kawakami, and H. Tsunetsugu
J. Phys.: Condens. Matter 19, 145251 (2007).
Ground-state properties of 1D Hubbard model in optical superlattice
A. Yamamoto, T. Yamashita, M. Yamashita and N. Kawakami
J. Mag. Mag. Mater. 310, 910-912, (2007).
Thermodytnamic properties of the two-orbital Hubbard model
K. Inaba, A. Koga, S. Suga, and N. Kawakami
J. Mag. Mag. Mater. 310, 876-878 (2007).
Anomalous magnetic properties near Mott transition in Kagome lattice Hubbard model
T. Ohashi, S. Suga, N. Kawakami, and Tsunetsugu
J. Mag. Mag. Mater. 310, 879-881 (2007).
Spin dynamics of S=1 bond-alternating spin chains in transverse fields
T. Suzuki and S. Suga
J. Mag. Mag. Mater. 310, 1197-1199 (2007).
Crossover behavior in two-channel Kondo model with channel-symmetry breaking
T. Kita, T. Ohashi, and S. Suga
J. Mag. Mag. Mater. 310, e337-e339 (2007).
NMR relaxation rates of quantum spin chains in magnetic fields lattice
S. Suga and T. Suzuki
J. Mag. Mag. Mater. 310, e381-e383 (2007).

2006

Modulation of three-orbital Kondo effect in quantum dots
T. Kita, R. Sakano, T. Ohashi, and S. Suga
Phys. Stat. Sol. (C) 3, (2006) 4338-4341 .
Spin dynamics of the half-magnetization plateau in S=1 bond-alternating spin chains
T. Suzuki and S. Suga
J. Phys. Conference series 51 (2006) 175-178 .
NMR relaxation of quantum spin chains in magnetic fields
T. Suzuki and S. Suga
Phys. Rev. B 74 (2006) 172410.
Phase diagrams of the two-orbital Hubbard model with different bandwidths
K. Inaba and A. Koga
Phys. Rev. B 73 (2006) 155106.
Tomonaga-Luttinger Liquid in a Quasi-One-Dimensional S=1 Antiferromagnet Observed by the Specific Heat
M. Hagiwara, H. Tsujii, C. R. Rotundu, B. Andraka, Y. Takano, N. Tateiwa, T. C. Kobayashi, T. Suzuki, and S. Suga
Phys. Rev. Lett. 96 (2006) 147203.

2005

Spin Dynamics of NTENP and NDMAP in Transverse Magnetic Fields
T. Suzuki and S. Suga
Prog. Theor. Phys. Suppl. 159, (2005) 133-137.
Infrared Optical Absorption Spectra in Cuprate Two-Leg Spin-Ladder Systems with a Cyclic Four-Spin Interaction
K. Inaba and S. Suga
Prog. Theor. Phys. Suppl 159, (2005) 128-132.
Dynamical Structure Factors of S=1 Bond-Alternating Heisenberg Chains at Finite Temperatures
T. Suzuki and S. Suga
Prog. Theor. Phys. Suppl. 159, (2005) 123-127.
Dynamical properties of S=1 bond-alternating Heisenberg chains at finite temperatures
T. Suzuki and S. Suga
Phys. Lett. A 343 (2005) 462-468.
Finite-temperature Mott transitions in the multiorbital Hubbard model
K. Inaba, A. Koga, S. Suga and N. Kawakami
Phys. Rev. B 72 (2005) 085112.
Phase diagram of orbital-selective Mott trandition at finite temperature
K. Inaba, A. Koga, S. Suga and N. Kawakami
J. Phys. Soc. Jpn. 74 (2005) 2393.
 Dynamical properties of  S=1 bond-alternating Heisenberg chains in transverse magnetic fields 
T. Suzuki and S. Suga
Phys. Rev. B 72 (2005) 014434.
Magnetic properties of a Kondo insulator with RKKY interaction: Extended dynamical mean field study
T. Ohashi, S. Suga, and Norio Kawakami
J. Phys. Condensed Matter 17 (2005) 4547-4558.
Field-induced phase transition in the periodic Anderson model
T. Ohashi, A. Koga, S. Suga and N. Kawakami
PHYSICA B-CONDENSED MATTER 359 (2005) 738.
Spin excitations under fields in an anisotropic bond-alternating quantum S=1 chain : Contrast with Haldane spin chains
M. Hagiwara, L. P. Regnault, A. Zheludev, A. Stunault, N. Metoki, T. Suzuki, S. Suga, K. Kakurai, Y. Koike, P. Vorderwisch, and J. H. Chung
Phys. Rev. Lett. 94 (2005) 177202.

2004

Field-induced phase transitions in a Kondo insulator
T. Ohashi, A. Koga, S. Suga and N. Kawakami
Phys. Rev. B 70 (2004) 245104.
Incommensurate state in a quasi-one-dimensional S=1/2 bond-alternating antiferromagnet with frustration in magnetic fields
T. Suzuki and S. Suga
Phys. Rev. B 70 (2004) 054419.
Frustrated Ising Model on the Gernet Lattice
T. Yoshioka, T. Ohashi, A. Koga and N. Kawakami
J. Phys. Soc. Jpn. 73 (2004) 1805.
Parity effects in nanoscale metallic grain including a magnetic impurity
K. Namoto, S. Suga and N. Kawakami
J. Rhys. Soc. Jpn. 73 (2004) 2349.
NMR relaxation rate of F_5PNN in magnetic fields
S. Suga and T. Suzuki
Physica B 346-347 (2004) 55.

2003

Dynamical structure factors of S=1 bond-alternating Heisenberg chains
T. Suzuki and S. Suga
Phys. Rev. B 68 (2003) 134429.
Non-Fermi-liquid properties in disordered Kondo systems
S. Suga and T. Ohashi
J. Phys.: Condens. Matter 15 (2003) S2219.
Quantum phase transitions in a frustrated orthogonal-dimer S=1 spin system
A. Koga and N. Kawakami
Physica B 329 (2003) 1267.
Effects of degenerate orbitals on the Hubbard model
A. Koga, T. Ohashi, Y. Imai, S. Suga and N. Kawakami
J. Phys. Soc. Jpn. 72 (2003) 1306.
Kondo effect in low-dimensional disordered systems
T. Ohashi and S. Suga
Physica B 329-333 (2003) 1275.
Optical absorption of S=1/2 two-leg spin ladder systems
N. Haga and S. Suga
Physica B 329-333 (2003) 1014.
Optical absorption spectra in SrCu2O3 two-leg spin ladder
N. Haga and S. Suga
Phys. Rev. B 67 (2003) 134432.
Kondo effect in two-dimensional disordered electron systems
S. Suga and T. Ohashi
J. Phys. Soc. Jpn. 72 Suppl. A (2003) 139.

2002

Dynamical structure factors of S=1/2 two-leg spin ladder systems
N. Haga and S. Suga
Phys. Rev. B 66 (2002) 132415.
Dynamics and Incommensurate Spin Correlation of the Magnetization Plateau State in the S=1/2 Bond-Alternating Spin Chain with a Next-Nearest-Neighbor Interaction
S. Suga and N. Haga
Prog. Theor. Phys. Suppl. vol. 145, (2002) 130.
Dynamics of S=1/2 Two-Leg Spin Ladder Systems
N. Haga and S. Suga
Prog. Theor. Phys. Suppl. vol. 145, (2002) 278.
Susceptibility of a magnetic impurity in two-dimensional disordered electron systems
T. Ohashi and S. Suga
J. Phys. Soc. Jpn. 71 (2002) 1246.
Dynamical structure factors of the magnetization-plateau state in the S=1/2 bondalternating spin chain with a next-nearest-neighbor interaction
N. Haga and S. Suga
Phys. Rev. B 65 (2002) 014414.

2001

Elementary excitations for the orbitally degenerate Anderson model at finitetemperatures
A.Tomiyama, S. Suga and A. Okiji
Phys. Rev. B 63, 24407 (2001)

2000

Dynamical structure factors of the S=1/2 bond-alternating spin chain with a nextnearestneighbor interaction in magnetic fields
M. Usami and S. Suga
J. Phys. Soc. Jpn. 69 (2000) 3419
 
NMR relaxation rate of (quasi-) one-dimensional spin-gapped systems in magnetic fields
N. Haga and S. Suga
J. Phys. Soc. Jpn. 69 (2000) 2431
Elementary excitations of the Anderson model in magnetic fields
S. Suga and A. Tomiyama
Physica B : Condensed Matter (281-282) 1-4 (2000) 834