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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 paper, the quasi-thermal-equilibrium states of electron-hole (e-h) systems in photoexcited insulators are studied from a theoretical viewpoint, stressing the exciton Bose-Einstein condensation (BEC), the e-h BCS-type pair-condensed state, and the Mott transition between an insulating exciton/biexciton gas phase and a metallic e−h plasma phase.
2 citations
TL;DR: In this article, the influence of excited carriers on dielectric susceptibility is investigated based on a quasi-particle approximation for the carrier energies and damping, and on the semiconductor Bloch equations including dynamical screening and a quantum kinetic treatment of scattering.
Abstract: The Mott transition of excitons in a semiconductor with increasing carrier density is in principle well understood as a consequence of screening of the Coulomb interaction between carriers. While the position of the exciton stays widely unchanged the exciton peak disappears due to band gap shrinkage. However, a more quantitative check of applied theoretical models for the screening and of the role of quantum kinetic effects in this process is still open.We demonstrate that the phase-resolved reflection in shallow-confined ZnSSe heterostructures opens the possibility of a detailed study of the Mott transition due to the appearance of pronounced interferences effects of propagating polariton modes.
Our theoretical approach for the investigation of the influence of excited carriers on the dielectric susceptibility is based (i) on a quasi-particle approximation for the carrier energies and damping, and (ii) on the semiconductor Bloch equations including dynamical screening and a quantum kinetic treatment of scattering. These manybody effects lead to drastic changes of both amplitude and phase of the reflected light: Jumps of the phase are steepened, show abrupt changes from +π to –π and are smoothed out, and interference peaks in the amplitude decrease and disappear completely with increasing excitation. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
2 citations
2 citations
TL;DR: In this paper, the Faraday rotation associated with the donors in CdS is found to be a very efficient tool to study magnetic resonance allowing measurement of the spin lattice relaxation time.
Abstract: The Faraday rotation associated with the donors in CdS is found to be a very efficient tool to study magnetic resonance allowing measurement of the spin lattice relaxation time. By comparing two different concentrations it is shown that interaction between donors becomes important well before the onset of the Mott transition.
2 citations
TL;DR: This corrects the article DOI: 10.1103/PhysRevLett.115.246402 to reflect that the paper was originally published in Physical Review Letters, not RevLett, rather than Science, which is correct.
Abstract: This corrects the article DOI: 10.1103/PhysRevLett.115.246402.
2 citations