Topic
Mott transition
About: Mott transition is a research topic. Over the lifetime, 2444 publications have been published within this topic receiving 78401 citations.
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TL;DR: The magnetic field of complete spin polarization in a disorderless single-valley strongly-interacting 2D electron system was calculated in this article, where nonequilibrium spin states were predicted, which should give rise to hysteresis in the magnetization.
Abstract: The magnetic field of complete spin polarization is calculated in a disorderless single-valley strongly-interacting 2D electron system. In the metallic region above the Wigner-Mott transition, nonequilibrium spin states are predicted, which should give rise to hysteresis in the magnetization.
6 citations
TL;DR: In this paper, the metal-insulator Mott transition was detected through the electron spins in a two-dimensional organic conductor, which has been extensively studied by means of charge transport.
Abstract: The metal–insulator Mott transition, which has been extensively studied by means of charge transport, is now detected through the electron spins in a two-dimensional organic conductor.
6 citations
TL;DR: Using the coherent potential approximation, the zero-temperature Mott transition in the half-filled Hubbard model on the honeycomb lattice was studied in this paper, where a pseudogap is already present for the non-interacting case, the gap will not occur until the onsite Coulomb repulsion exceeds a critical value U ≈ 36t, where t is the hopping integral.
Abstract: Using the coherent potential approximation, we study zero-temperature Mott transition in the half-filled Hubbard model on the honeycomb lattice Although a pseudogap is already present for the non-interacting case, the gap will not occur until the onsite Coulomb repulsion exceeds a critical value U ≈ 36t, where t is the hopping integral When increasing U/t, the density of states at the Fermi energy first goes up gradually from zero and after reaching a maximum it goes down to zero again Our calculated critical interaction UC/t is in very good agreement with the ones obtained by quantum Monte Carlo simulation and cluster dynamical mean-field theory
6 citations
16 Jun 2014
TL;DR: In this article, an intuitive interpretation of the relationship between the dispersion relation of the single-particle excitation in a metal and that of the spin excitations in a Mott insulator is presented, based on the results for the one-and two-dimensional Hubbard models obtained by using the Bethe ansatz, dynamical density-matrix renormalization group method, and cluster perturbation theory.
Abstract: An intuitive interpretation of the relationship between the dispersion relation of the single-particle excitation in a metal and that of the spin excitation in a Mott insulator is presented, based on the results for the one- and two-dimensional Hubbard models obtained by using the Bethe ansatz, dynamical density-matrix renormalization group method, and cluster perturbation theory. The dispersion relation of the spin excitation in the Mott insulator is naturally constructed from that of the single-particle excitation in the zero-doping limit in both one- and two-dimensional Hubbard models, which allows us to interpret the doping-induced states as the states that lose charge character toward the Mott transition. The characteristic feature of the Mott transition is contrasted with the feature of a Fermi liquid and that of the transition between a band insulator and a metal.
6 citations
TL;DR: In this article, the Mott transition of pseudo-Goldstone bosons is used to define the chiral crossover temperature at finite temperature, based on Goldstone's theorem, and it is shown that in an external magnetic field, it exhibits an inverse magnetic catalysis effect.
Abstract: We discuss the proper definition for the chiral crossover at finite temperature, based on Goldstone's theorem. Different from the commonly used maximum change in chiral condensate, we propose defining the crossover temperature using the Mott transition of pseudo-Goldstone bosons, which, by definition, guarantees Goldstone's theorem. We analytically and numerically demonstrate this property in the frame of a Pauli-Villars regularized NJL model. In an external magnetic field, we find that the Mott transition temperature shows an inverse magnetic catalysis effect.
6 citations