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Thermal effects on the Wigner localization and Friedel oscillations in many-electron nanowires

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Details

Original languageEnglish
Article number115417
JournalPhysical Review B
Volume94
Issue number11
DOIs
Publication statusPublished - 13 Sep 2016
Publication typeA1 Journal article-refereed

Abstract

Thermal effects on the total charge density are studied for a one-dimensional correlated quantum dot by means of the path integral Monte Carlo method. The competition between Friedel and Wigner oscillations at zero temperature is driven by the ratio between the interaction of electronic strength and the kinetic energy of electrons. At the onset of the formation of a Wigner molecule, we show that thermal enhancement of Wigner oscillations occurs in a range of temperatures, which can be observed in the electron density. We further show that low-temperature Friedel oscillations may change to Wigner oscillations upon an increase in the temperature.

Publication forum classification

Field of science, Statistics Finland