79 citations · 433 across the 23 of their papers we have counts for
6 papers · 1 filter
Surface State of Inter-orbital Pairing State in SrRuO Superconductor
Satoshi Ando, Satoshi Ikegaya, Shun Tamura +2
We study the (001) surface state of a recently proposed symmetry inter-orbital-odd spin-triplet s-wave superconducting (SC) state in SrRuO (SRO). We confirm that this…
Staggered Flux State in Two-Dimensional Hubbard Models
Hisatoshi Yokoyama, Shun Tamura, Masao Ogata
The stability and other properties of a staggered flux (SF) state or a correlated d-density wave state are studied for the Hubbard (t-t'-U) model on extended square lattices, as a…
Drude and Superconducting Weights and Mott Transitions in Variation Theory
Shun Tamura, Hisatoshi Yokoyama
Drude weight () is a useful measure to distinguish a metal from an insulator. However, has not been justifiably estimated by the variation theory for long, since Millis and…
Variational Approach to Localization Length for Two-Dimensional Hubbard Model
Shun Tamura, Yokoyama Hisatoshi
As a measure to ascertain whether a system is metallic or insulating, localization length , which represents the spread of electron distribution, can be a useful quantity, esp…
Variational study of conduction in doped Mott insulator in terms of kinetic energy
H. Yokoyama, S. Tamura, K. Kobayashi +1
The kinetic features of holes (electrons) in the Hubbard model are studied using a variational Monte Carlo method. In doped Mott insulators (U>U_co), holes are classified, in the s…
Variational Monte Carlo Study of Spin-Gapped Normal State and BCS-BEC Crossover in Two-Dimensional Attractive Hubbard Model
Shun Tamura, Hisatoshi Yokoyama
We study properties of normal, superconducting (SC) and CDW states for an attractive Hubbard model on the square lattice, using a variational Monte Carlo method. In trial wave func…