19 citations · 70 across the 6 of their papers we have counts for
6 papers
Gap opening mechanism for correlated Dirac electrons in organic compounds -(BEDT-TTF)I and -(BEDT-TSeF)I
Daigo Ohki, Kazuyoshi Yoshimi, Akito Kobayashi +1
To determine how electron correlations open a gap in two-dimensional massless Dirac electrons in the organic compounds -(BEDT-TTF)I [-(ET)I] and -(BEDT-TSe…
Interaction-induced quantum spin Hall insulator in the organic Dirac electron system -(BEDT-TSeF)I
Daigo Ohki, Kazuyoshi Yoshimi, Akito Kobayashi
Focusing on the recently-discovered candidate topological insulator -(BEDT-TSeF)I -- having two-dimensional charge-neutral Dirac cones in a low symmetry lattice -- we co…
Tight-Binding Model and Electronic Property of Dirac Nodal Line in Single-Component Molecular Conductor [Pt(dmdt)]
Taiki Kawamura, Daigo Ohki, Biao Zhou +2
Motivated by the recent discovery of Dirac nodal line in the single-component molecular conductor [Pt(dmdt)], we propose a three-orbital tight-binding model based on the Wann…
Transport properties of organic Dirac electron system α-(BEDT-TSeF)I
Daigo Ohki, Kazuyoshi Yoshimi, Akito Kobayashi
Motivated by the insulating behavior of -(BEDT-TSeF)I at low temperatures ('s), we first performed first-principles calculations based on the crystal structural data…
Effect of Coulomb Interaction on Seebeck Coefficient of Organic Dirac Electron System -(BEDT-TTF)I
Daigo Ohki, Yukiko Omori, Akito Kobayashi
Motivated by the results of recent thermoelectric effect studies, we show the effects of Coulomb interactions on the Seebeck coefficient based on an extended Hubbard model that des…
Domain Wall Conductivity with strong Coulomb interaction of two-dimensional massive Dirac Electrons in the Organic Conductor -(BEDT-TTF)I
Daigo Ohki, Yukiko Omori, Akito Kobayashi
Motivated by the results of recent transport and optical conductivity studies, we propose a semi-infinite two-dimensional lattice model for interacting massive Dirac electrons in t…