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: In this article, the effects of carrier-dopant ion interactions on the conduction and valence bands and their densities of states are calculated by extending the work of Abram et al. to include both finite wave numbers and finite temperatures.
Abstract: The changes in carrier densities of states and effective intrinsic carrier concentrations due to high dopant and carrier concentration effects in Ga1−yAlyAs are calculated at 300 K for donor densities between 1016 and 1019 cm−3 and for acceptor densities between 1016 and 1020 cm−3. The mole fraction of AlAs, y, varies between 0.0 and 0.3 in these calculations. The Klauder self-energy method (fifth level of approximation) is used to describe the effects of carrier–dopant ion interactions on the conduction and valence bands and their densities of states. The effects of carrier–carrier interactions (majority-carrier exchange and minority-carrier correlation) are calculated by extending the work of Abram et al. to include both finite wave numbers and finite temperatures. This article is the first reported use of one theory to treat both sides of the Mott transition. Namely, solutions of the very nonlinear integral equations that result from the Klauder fifth-level approximation are obtained for low-dopant den...
23 citations
TL;DR: In this article, the Mott-type metal-insulator transition has been successfully realized in a misfit-layer compound system La 1.17 VS 3.17 by Sr substitution for La.
Abstract: The Mott-type metal-insulator transition has been successfully realized in a misfit-layer compound system La 1.17 VS 3.17 by Sr substitution for La. The transport properties are found to exhibit anomalous behaviors which are very similar to those of high-T c oxides, indicating that they are commonly found in systems having electrons with 2-dimensional nature located near the Mott metal-insulator phase boundary.
23 citations
TL;DR: In this paper, the possibility of crystallization and magnetic ordering in an electron gas was examined in the determinantal approximation, using a variational method, and a Mott transition was found at rs similar, equals 10 to a ferromagnetic crystalline state of the Wigner type.
Abstract: The possibility of crystallization and magnetic ordering in an electron gas is examined in the determinantal approximation, using a variational method. A Mott transition is found at rs similar, equals 10 to a ferromagnetic crystalline state of the Wigner type, while an antiferromagnetic crystalline phase seems to be excluded. A simple way of including correlation effects is proposed, in which a correlation function is introduced into the interaction energy between electrons of antiparallel spin. The possibility then emerges of a crystalline antiferromagnetic phase over the large intermediate density range 10 less, equals rs less, equals 40.
23 citations
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15 Jan 1998-Philosophical transactions - Royal Society. Mathematical, physical and engineering sciences
TL;DR: In this paper, the Mott transition in the infinitedimensional Hubbard model is reviewed and it is argued that the problem remains open, but is likely to hinge on a proper understanding of th...
Abstract: Current understanding of the Mott transition in the infinitedimensional Hubbard model is reviewed. It is argued that the problem remains open, but is likely to hinge on a proper understanding of th...
23 citations
Journal Article•
TL;DR: In this article, it was shown that large anisotropies can be induced without static stripe order if the interaction is large enough to yield a Mott transition in the two-dimensional Hubbard model with dynamical mean-field theory for clusters.
Abstract: Very large anisotropies in transport quantities have been observed in the presence of very small in-plane structural anisotropy in many strongly correlated electron materials. By studying the two-dimensional Hubbard model with dynamical-mean-field theory for clusters, we show that such large anisotropies can be induced without static stripe order if the interaction is large enough to yield a Mott transition. Anisotropy decreases at large frequency. The maximum effect on conductivity anisotropy occurs in the underdoped regime, as observed in high temperature superconductors.
23 citations