Mott transition in a ruby lattice with fermions described by the Hubbard model including on-site repulsive interaction is investigated by combining the cellular dynamical mean-field theory and the continuous-time quantum Monte Carlo algorithm.The effect of temperature and on-site repulsive interaction ...
We investigate the bandwidth-controlled Mott transition in the Hubbard model on the checkerboard lattice at half filling using the path-integral renormalization group (PIRG) method. It is demonstrated that the system undergoes a first-order phase transition to the plaquette-singlet insulating phase at...
^D. van Oosten, P. van der Straten, and H. T. C. Stoof, Quantum phases in an optical lattice, Rhys. Rev. A 63, 053601 (2001) ^Zheng,Qiao,Wang,Cao,Chen,Exact Solution of the Bose-Hubbard Model with Unidirectional Hopping,Phys.Rev.Lett. 132,086502(2024) ・IP 属地甘肃...
Tanaka. Mott Transitions and d-Wave Superconductivity in Half- Filled-Band Hubbard Model on Square Lattice with Geometric Frustration. J . Phys. Soc. Jpn., 75(11):114706, November 2006.Yokoyama, H.; Ogata, M.; Tanaka, Y. Mott transitions and d-wave superconductivity in half-filled-band ...
For the Hubbard model with multiple orbitals at the magnetic ions, the orbital necessarily becomes an active degree of freedom in addition to the spin once the system is in the Mott insulating phase with localized electrons on the lattice sites7. In this case, more structures are involved in ...
Semi-Metal-Insulator Transition of the Hubbard Model in the Honeycomb Lattice Using quantum Monte Carlo and finite-size scaling for the Hubbard model, we find evidence of a zero-temperature transition between the nonmagnetic semi-met... S Sorella,E Tosatti - 《Europhysics Letters》 被引量: 193...
The importance of the interlayer stacking can be understood from a three-dimensional Hubbard model with intra- and interlayer hopping taken into account. The one-band Hamiltonian of 1T-TaS2 CCDW ground state can be written as: where tij is the effective hopping between the David-stars and U ...
Carlo simulations, we study the interaction-driven Mott metal-insulator transition (MIT) in the half-filled Hubbard model on the anisotropic two-dimensional triangular lattice, where the degree of frustration is varied between the unfrustrated case and the fully frustrated, isotropic triangular lattice...
lattice fermion models (hubbard model, etc.)metal-insulator transitions and other electronic transitionsBased on dynamical cluster approximation (DCA) quantum Monte Carlo simulations, we study the interaction-driven Mott metal-insulator transition (MIT) in the half-filled Hubbard model on the anisotropic...
However, since 1/13T1T does not approach zero even when the temperature is reduced well below Tc, the transition here to the superconducting state is incomplete. The partial suppres- sion of the spin-lattice relaxation rates and the presence of two over- lapping NMR components are thus ...