Density of states of two-dimensional systems with long-range logarithmic interactions

Somoza, Andres M. and Ortuno, Miguel and Baturina, Tatyana I. and Vinokur, Valerii M. (2015) Density of states of two-dimensional systems with long-range logarithmic interactions. PHYSICAL REVIEW B, 92 (6): 064201. ISSN 2469-9950, 2469-9969

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Abstract

permittivity systems with logarithmic Coulomb interaction between particles. We derive self-consistent DOS at zero temperature and show that it is appreciably suppressed as compared to the DOS expected from the Efros-Shklovskii approach. We carry out zero-and finite-temperature Monte Carlo numerical studies of the DOS and find the perfect agreement between the numerical and analytical results at zero temperature, observing, in particular, a hardening of the Coulomb gap with the increasing electrostatic screening length. At finite temperatures, we reveal a striking scaling of the DOS as a function of energy normalized to the temperature of the system.

Item Type: Article
Uncontrolled Keywords: METAL-INSULATOR-TRANSITION; CONTINUOUS SYMMETRY GROUP; DIELECTRIC-CONSTANT; CRITICAL-BEHAVIOR; LOCALIZED-ELECTRONS; DISORDERED SYSTEMS; GRANULAR ALUMINUM; PHASE-TRANSITIONS; COULOMB GAP; FILMS;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk
Depositing User: Dr. Gernot Deinzer
Date Deposited: 14 Jun 2019 12:37
Last Modified: 14 Jun 2019 12:37
URI: https://pred.uni-regensburg.de/id/eprint/5042

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