Exciton Mott transition in electron-hole systems: Dynamical mean-field theory for the continuous-space model
نویسندگان
چکیده
منابع مشابه
Cluster dynamical mean field theory of the Mott transition.
We address the nature of the Mott transition in the Hubbard model at half-filling using cluster dynamical mean field theory (DMFT). We compare cluster-DMFT results with those of single-site DMFT. We show that inclusion of the short-range correlations on top of the on-site correlations does not change the order of the transition between the paramagnetic metal and the paramagnetic Mott insulator,...
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S. Florens, A. Georges, G. Kotliar, and O. Parcollet Laboratoire de Physique Théorique, Ecole Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France and Laboratoire de Physique des Solides, Université Paris-Sud, Bât. 510, 91405 Orsay, France Center for Materials Theory, Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854 Service de Physique Théorique,...
متن کاملCluster dynamical mean field analysis of the mott transition.
We investigate the Mott transition using a cluster extension of dynamical mean field theory (DMFT). In the absence of frustration we find no evidence for a finite temperature Mott transition. Instead, in a frustrated model, we observe signatures of a finite temperature Mott critical point in agreement with experimental studies of kappa organics and with single-site DMFT. As the Mott transition ...
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The Anderson–Hubbard Hamiltonian at half–filling is investigated within dynamical mean–field theory at zero temperature. The local density of states is calculated by taking the geometric and arithmetic mean, respectively. The non–magnetic ground state phase diagrams obtained within the different averaging schemes are compared.
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We investigate the Mott transition in innnite dimensions in the orbitally degenerate Hubbard model. We nd that the qualitative features of the Mott transition found in the one band model are also present in the orbitally degenerate case. Surprisingly, the quantitative aspects of the transition around density one are not very sensitive to orbital degeneracy, justifying the quantitative success o...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2009
ISSN: 1742-6596
DOI: 10.1088/1742-6596/148/1/012052