LUNDIN U,Sandalov I,Johansson B. Mott-Hubbard transition in the N-orbital Hubbard model[J].Physical Review B,2000.836-837.Lundin U,Sandalov I,Johansson B.Mott-Hubbard transition in the N-orbital Hubbard model. Physica B Condensed Matter . 2000...
Hubbard Model 1.2Dynamical Mean-Field Theory 111.2.1 Limit SpinModels 121.2.2 Limit 131.2.3 Simplifications HubbardModel 151.3 Quantum Monte Carlo Algorithm 191.3.1 Wick’s Theorem DiscretizedImpurity Problem 191.3.2 Monte Carlo Importance Sampling 211.4 Maximum Entropy Method States27 2.1 Hypercubic...
We study the metal-insulator transition and magnetic ordering in the Hubbard model using the particle-hole mapping. This representation facilitates the exact solution of the half-filled band in the limit of high spin. We find that the two-dimensional Hubbard model has a charge-excitation gap at...
Bruder. Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model. Physical Review A, 70:053609, 2004.C Schroll, F Marquardt, and C Bruder, Perturbative corrections to the Gutzwiller mean-field solution for the Mott-Hubbard model, Phys. Rev. A 70, 053609 (2004...
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...
(Dated:February2,2008)CorrelatedelectronsinabinaryalloyAxB1−xareinvestigatedwithintheHubbardmodelanddynamicalmean–fieldtheory(DMFT).Therandomenergiesǫihaveabimodalprobabilitydistribu-tionandanenergyseparation∆.WesolvetheDMFTequationsbythenumericalrenormalizationgroupmethodatzerotemperature,andcalculatethe...
thermoelectric effects in semiconductors and insulators/ Mott-Hubbard modelliquid MnTesubband splittingd-band splittingintraatomic effectA series of experiments performed in our laboratory have shown that liquid alloy systems of the form MTe (M is a transition metal other than Mn) combine salt-like ...
Within dynamical mean-field theory, we study the metal-insulator transition of a twofold orbitally degenerate Hubbard model as a function of a splitting Δ... Nicola,Manini,Giuseppe,... - 《Physical Review B》 被引量: 2发表: 2002年 The Mott–Hubbard insulating state and orbital degeneracy in...
Using a combination of perturbation theory and quantum Monte Carlo, we elucidate the behavior of the single-particle Green's function and the local spin-spin correlation function near the Mott transition in the infinite dimensional Hubbard model at half filling. The model has three fixed points: ...
Understanding Mott insulators and charge density waves (CDW) is critical for both fundamental physics and future device applications. However, the relationship between these two phenomena remains unclear, particularly in systems close to two-dimensional