Akihisa Koga
Akihisa Koga
Unknown affiliation
Verified email at phys.titech.ac.jp
TitleCited byYear
Superconductivity without Inversion Symmetry: MnSi versus
PA Frigeri, DF Agterberg, A Koga, M Sigrist
Physical review letters 92 (9), 097001, 2004
6382004
Orbital-selective Mott transitions in the degenerate Hubbard model
A Koga, N Kawakami, TM Rice, M Sigrist
Physical review letters 92 (21), 216402, 2004
3172004
Quantum Phase Transitions in the Shastry-Sutherland Model for
A Koga, N Kawakami
Physical review letters 84 (19), 4461, 2000
1762000
Quantum phase transitions in the Hubbard model on a triangular lattice
T Yoshioka, A Koga, N Kawakami
Physical review letters 103 (3), 036401, 2009
1122009
Spin, charge, and orbital fluctuations in a multiorbital Mott insulator
A Koga, N Kawakami, TM Rice, M Sigrist
Physical Review B 72 (4), 045128, 2005
972005
Stability of a metallic state in the two-orbital Hubbard model
A Koga, Y Imai, N Kawakami
Physical Review B 66 (16), 165107, 2002
822002
First-order quantum phase transition in the orthogonal-dimer spin chain
A Koga, K Okunishi, N Kawakami
Physical Review B 62 (9), 5558, 2000
672000
Finite-temperature Mott transitions in the multiorbital Hubbard model
K Inaba, A Koga, S Suga, N Kawakami
Physical Review B 72 (8), 085112, 2005
622005
Superconductivity in non-centrosymmetric materials
M Sigrist, DF Agterberg, PA Frigeri, N Hayashi, RP Kaur, A Koga, I Milat, ...
Journal of Magnetism and Magnetic Materials 310 (2), 536-540, 2007
612007
Frustrated Heisenberg antiferromagnet on the pyrochlore lattice
A Koga, N Kawakami
Physical Review B 63 (14), 144432, 2001
592001
Correlation effects in two-dimensional topological insulators
Y Tada, R Peters, M Oshikawa, A Koga, N Kawakami, S Fujimoto
Physical Review B 85 (16), 165138, 2012
492012
Phase diagrams of the two-orbital Hubbard model with different bandwidths
K Inaba, A Koga
Physical Review B 73 (15), 155106, 2006
482006
Low-temperature properties of the infinite-dimensional attractive Hubbard model
A Koga, P Werner
Physical Review A 84 (2), 023638, 2011
432011
Field-induced phase transitions in a Kondo insulator
T Ohashi, A Koga, S Suga, N Kawakami
Physical Review B 70 (24), 245104, 2004
422004
Supersolid state of ultracold fermions in optical lattice
A Koga, T Higashiyama, K Inaba, S Suga, N Kawakami
Journal of the Physical Society of Japan 77 (7), 073602-073602, 2008
402008
J. of Phys.: Cond. Mat. J. of Phys.: Cond. Mat. 16, 7063, 2004
A Koga, K Inaba, N Kawakami
Progress of theoretical physics. Supplement 160, 253-273, 2006
402006
Competing spin-gap phases in a frustrated quantum spin system in two dimensions
Y Takushima, A Koga, N Kawakami
Journal of the Physical Society of Japan 70 (5), 1369-1374, 2001
402001
SrCu2 (BO3) 2: A unique Mott Hubbard insulator
B Sriram Shastry, B Kumar
Progress of Theoretical Physics Supplement 145, 1-16, 2002
392002
Supersolid state in fermionic optical lattice systems
A Koga, T Higashiyama, K Inaba, S Suga, N Kawakami
Physical Review A 79 (1), 013607, 2009
372009
Quantum phase transitions for the Haldane system in higher dimensions: A mixed-spin cluster expansion approach
A Koga, N Kawakami
Physical Review B 61 (9), 6133, 2000
362000
The system can't perform the operation now. Try again later.
Articles 1–20