no code implementations • 24 May 2017 • Ryui Kaneko, Luca F. Tocchio, Roser Valentí, Federico Becca
Motivated by recent experimental suggestions of charge-order-driven ferroelectricity in organic charge-transfer salts, such as $\kappa$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Cl, we investigate magnetic and charge-ordered phases that emerge in an extended two-orbital Hubbard model on the anisotropic triangular lattice at $3/4$ filling.
Strongly Correlated Electrons Materials Science
1 code implementation • 21 Jun 2016 • Ryui Kaneko, Luca F. Tocchio, Roser Valentí, Claudius Gros
For this purpose we investigate the phase diagram of doped extended Hubbard models on two lattices: (i) the honeycomb lattice with on-site $U$ and nearest-neighbor $V$ Coulomb interactions at $3/4$ filling ($n=3/2$) and (ii) the triangular lattice with on-site $U$, nearest-neighbor $V$, and next-nearest-neighbor $V'$ Coulomb interactions at $3/8$ filling ($n=3/4$).
Strongly Correlated Electrons
1 code implementation • 29 Oct 2015 • Ryui Kaneko, Luca F. Tocchio, Roser Valentí, Federico Becca, Claudius Gros
We show that Jastrow-Slater wave functions, in which a density-density Jastrow factor is applied onto an uncorrelated fermionic state, may possess long-range order even when all symmetries are preserved in the wave function.
Strongly Correlated Electrons
