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Akihisa Koga

Identifiers

  • name variant Akihisa Koga 0.60 · backfill

Papers (75)

  1. Stealthy hyperuniform disorder: A new route to controlling electric states and magnetic phase transition in correlated systems cond-mat.str-el · 2026 · author #1
  2. Ferromagnetic Instability for single-band Hubbard model in the strong-coupling regime cond-mat.str-el · 2019 · author #3
  3. Low temperature properties in the Bilayer Kitaev model cond-mat.str-el · 2019 · author #3
  4. Quasiperiodicity and valence fluctuation in the spin-1/2 Falicov-Kimball model cond-mat.str-el · 2018 · author #3
  5. Staggered ordered phases in the three-orbital Hubbard model cond-mat.str-el · 2018 · author #3
  6. Quantum and classical behavior of spin-$S$ Kitaev models in an anisotropic limit cond-mat.str-el · 2018 · author #3
  7. Symmetry breaking states in the half-filled two-orbital Hubbard model with crystalline electric field cond-mat.str-el · 2018 · author #3
  8. Ground-state properties for bilayer Kitaev model: dimer expansion study cond-mat.str-el · 2018 · author #1
  9. Spontaneously orbital-selective superconductivity in a three-orbital Hubbard model cond-mat.supr-con · 2018 · author #3
  10. Ground-state and thermodynamic properties of an $S=1$ Kitaev model cond-mat.str-el · 2018 · author #1
  11. Intersite electron correlations on inhomogeneous lattices: a real-space dual fermion approach cond-mat.str-el · 2018 · author #2
  12. Interlayer Coupling Effect on a Bilayer Kitaev Model cond-mat.str-el · 2017 · author #3
  13. Antiferromagnetic order in the Hubbard Model on the Penrose Lattice cond-mat.str-el · 2017 · author #1
  14. Role of the spin-orbit coupling in the Kugel-Khomskii model on the honeycomb lattice cond-mat.str-el · 2017 · author #1
  15. Spontaneously symmetry breaking states in the attractive SU$(N)$ Hubbard model cond-mat.str-el · 2016 · author #1
  16. Superconductivity on a Quasiperiodic Lattice: Extended-to-Localized Crossover of Cooper Pairs cond-mat.supr-con · 2016 · author #3
  17. Valence Fluctuations in the Extended Anderson Lattice Model with Quasiperiodicity cond-mat.str-el · 2016 · author #3
  18. Phase transitions in the Hubbard model for the bismuth nickelate cond-mat.str-el · 2016 · author #3
  19. Finite Temperature Phase Transitions in the SU$(N)$ Hubbard model cond-mat.quant-gas · 2016 · author #2
  20. DMFT Study for Valence Fluctuations in the Extended Periodic Anderson Model cond-mat.str-el · 2015 · author #3
  21. Intersite electron correlations in a Hubbard model on inhomogeneous lattices cond-mat.str-el · 2015 · author #2
  22. Finite Temperature Properties of Three-Component Fermion Systems in Optical Lattice cond-mat.quant-gas · 2015 · author #2
  23. Transport properties for a quantum dot coupled to normal leads with pseudogap cond-mat.mes-hall · 2015 · author #2
  24. Valence Fluctuations and Electric Reconstruction in the Extended Anderson Model on the Two-Dimensional Penrose Lattice cond-mat.str-el · 2015 · author #3
  25. Superconductivity in the two-band Hubbard model cond-mat.str-el · 2014 · author #1
  26. Local Electron Correlations in a Two-dimensional Hubbard Model on the Penrose Lattice cond-mat.str-el · 2014 · author #2
  27. Stability of the Superfluid State in Three-Component Fermionic Optical Lattice Systems cond-mat.quant-gas · 2014 · author #3
  28. Supersolid states in a hard-core Bose-Hubbard model on a layered triangular lattice cond-mat.quant-gas · 2013 · author #2
  29. Cluster mean-field approach with density matrix renormalization group: Application to the hard-core bosonic Hubbard model on a triangular lattice cond-mat.quant-gas · 2013 · author #2
  30. Nonequilibrium transport through a quantum dot coupled to normal and superconducting leads cond-mat.str-el · 2013 · author #1
  31. Valence Fluctuations in the Extended Periodic Anderson Model at Finite Temperatures cond-mat.str-el · 2013 · author #2
  32. Quantum Monte Carlo study of nonequilibrium transport through a quantum dot coupled to normal and superconducting leads cond-mat.str-el · 2013 · author #1
  33. Mott transitions in the Hubbard model with spatially-modulated interactions cond-mat.str-el · 2012 · author #1
  34. Metal-Insulator transition in optical lattice system with site-dependent interactions cond-mat.str-el · 2012 · author #2
  35. Stability of FFLO states in optical lattices with bilayer structure cond-mat.supr-con · 2012 · author #2
  36. Low temperature properties of the fermionic mixtures with mass imbalance in optical lattice cond-mat.str-el · 2012 · author #2
  37. Low temperature properties of the infinite-dimensional attractive Hubbard model cond-mat.quant-gas · 2011 · author #1
  38. Superfluid state in the periodic Anderson model with attractive interactions cond-mat.quant-gas · 2010 · author #1
  39. Superfluid gap formation in a fermionic optical lattice with spin imbalanced populations cond-mat.quant-gas · 2010 · author #1
  40. Ferromagnetism of cold fermions loaded into a decorated square lattice cond-mat.quant-gas · 2010 · author #2
  41. Polarized Superfluidity in the imbalanced attractive Hubbard model cond-mat.quant-gas · 2010 · author #1
  42. Supersolid state in fermionic optical lattice systems cond-mat.supr-con · 2008 · author #1
  43. Quantum Phase Transitions in the Hubbard Model on Triangular Lattice cond-mat.str-el · 2008 · author #2
  44. Spatially-modulated Superfluid States in Fermionic Optical Ladder Systems with Repulsive Interactions cond-mat.stat-mech · 2008 · author #2
  45. Systematic Analysis of Frustration Effects in Anisotropic Checkerboard Lattice Hubbard Model cond-mat.str-el · 2008 · author #2
  46. Mott Transition in the Hubbard Model on Checkerboard Lattice cond-mat.str-el · 2008 · author #2
  47. Supersolid state of ultracold fermions in an optical lattice cond-mat.supr-con · 2008 · author #1
  48. Magnetic properties of the extended periodic Anderson model cond-mat.str-el · 2008 · author #1
  49. Quantum phase transitions in the extended periodic Anderson model cond-mat.str-el · 2007 · author #1
  50. Metal-insulator transition in the two-orbital Hubbard model at fractional band fillings: Self-energy functional approach cond-mat.str-el · 2007 · author #2
  51. Variational Monte Carlo analysis of the Hubbard model with a confining potential: one-dimensional fermionic optical lattice systems cond-mat.stat-mech · 2006 · author #2
  52. Phase diagram of orbital-selective Mott transitions at finite temperatures cond-mat.str-el · 2005 · author #2
  53. Finite-temperature Mott transitions in multi-orbital Hubbard model cond-mat.str-el · 2005 · author #2
  54. Spin, charge and orbital fluctuations in a multi-orbital Mott insulator cond-mat.str-el · 2005 · author #1
  55. Field-induced phase transition in the periodic Anderson model cond-mat.str-el · 2004 · author #2
  56. Field-induced phase transitions in a Kondo insulator cond-mat.str-el · 2004 · author #2
  57. Mott transitions in the multi-orbital systems cond-mat.str-el · 2004 · author #1
  58. Periodic Anderson model with degenerate orbitals: linearized dynamical mean field theory approach cond-mat.str-el · 2004 · author #3
  59. Frustrated Ising model on the garnet lattice cond-mat.stat-mech · 2004 · author #2
  60. Orbital-selective Mott transitions in the degenerate Hubbard model cond-mat.str-el · 2004 · author #1
  61. Effects of degenerate orbitals on the Hubbard model cond-mat.str-el · 2003 · author #1
  62. Quantum phase transitions of the S=1 Shastry-Sutherland model cond-mat.str-el · 2002 · author #1
  63. Re-Entrant Quantum Phase Transitions in Antiferromagnetic Spin-1 Ladders cond-mat.str-el · 2002 · author #3
  64. Stability of a metallic state in the two-orbital Hubbard model cond-mat.str-el · 2002 · author #1
  65. Hole-doping effects on a frustrated spin ladder cond-mat.str-el · 2002 · author #2
  66. First-Order Phase Transitions in Frustrated Spin Systems cond-mat.str-el · 2002 · author #1
  67. Magnetization process for a quasi-one-dimensional S=1 antiferromagnet cond-mat.str-el · 2002 · author #2
  68. Frustration-induced phase transitions in the spin-S orthogonal-dimer chain cond-mat.str-el · 2002 · author #1
  69. Competing Spin-Gap Phases in a Frustrated Quantum Spin System in Two Dimensions cond-mat.str-el · 2001 · author #2
  70. Frustrated Heisenberg antiferromagnet on a pyrochlore lattice cond-mat.str-el · 2000 · author #1
  71. Ground-State Phase Diagram for the Three-Dimensional Orthogonal-Dimer System cond-mat.str-el · 2000 · author #1
  72. First-order quantum phase transition in the orthogonal-dimer spin chain cond-mat.str-el · 2000 · author #1
  73. Quantum Phase Transitions in the Shastry-Sutherland Model for $\rm\bf SrCu_2 (BO_3)_2$ cond-mat.str-el · 2000 · author #1
  74. Excitation Spectrum for Quantum Spin Systems with Ladder, Plaquette and Mixed-Spin Structures cond-mat.str-el · 1999 · author #1
  75. Mixed-spin cluster expansion for a quasi-one-dimensional Haldane system cond-mat.str-el · 1999 · author #1

Mentions

  • 1303.0288 #1 · backfill · confidence 0.70 Akihisa Koga
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Frequent Coauthors