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Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas

Quantum scars refer to an enhanced localization of the probability density of states in the spectral region with a high energy level density. Scars are discussed for a number of confined pure and impurity-doped electronic systems. Here, we studied the role of spin on quantum scarring for a generic s...

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Detalles Bibliográficos
Autores principales: Berger, Michael, Schulz, Dominik, Berakdar, Jamal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8151648/
https://www.ncbi.nlm.nih.gov/pubmed/34064782
http://dx.doi.org/10.3390/nano11051258
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author Berger, Michael
Schulz, Dominik
Berakdar, Jamal
author_facet Berger, Michael
Schulz, Dominik
Berakdar, Jamal
author_sort Berger, Michael
collection PubMed
description Quantum scars refer to an enhanced localization of the probability density of states in the spectral region with a high energy level density. Scars are discussed for a number of confined pure and impurity-doped electronic systems. Here, we studied the role of spin on quantum scarring for a generic system, namely a semiconductor-heterostructure-based two-dimensional electron gas subjected to a confining potential, an external magnetic field, and a Rashba-type spin-orbit coupling. Calculating the high energy spectrum for each spin channel and corresponding states, as well as employing statistical methods known for the spinless case, we showed that spin-dependent scarring occurs in a spin-coupled electronic system. Scars can be spin mixed or spin polarized and may be detected via transport measurements or spin-polarized scanning tunneling spectroscopy.
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spelling pubmed-81516482021-05-27 Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas Berger, Michael Schulz, Dominik Berakdar, Jamal Nanomaterials (Basel) Article Quantum scars refer to an enhanced localization of the probability density of states in the spectral region with a high energy level density. Scars are discussed for a number of confined pure and impurity-doped electronic systems. Here, we studied the role of spin on quantum scarring for a generic system, namely a semiconductor-heterostructure-based two-dimensional electron gas subjected to a confining potential, an external magnetic field, and a Rashba-type spin-orbit coupling. Calculating the high energy spectrum for each spin channel and corresponding states, as well as employing statistical methods known for the spinless case, we showed that spin-dependent scarring occurs in a spin-coupled electronic system. Scars can be spin mixed or spin polarized and may be detected via transport measurements or spin-polarized scanning tunneling spectroscopy. MDPI 2021-05-11 /pmc/articles/PMC8151648/ /pubmed/34064782 http://dx.doi.org/10.3390/nano11051258 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Berger, Michael
Schulz, Dominik
Berakdar, Jamal
Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas
title Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas
title_full Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas
title_fullStr Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas
title_full_unstemmed Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas
title_short Spin-Resolved Quantum Scars in Confined Spin-Coupled Two-Dimensional Electron Gas
title_sort spin-resolved quantum scars in confined spin-coupled two-dimensional electron gas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8151648/
https://www.ncbi.nlm.nih.gov/pubmed/34064782
http://dx.doi.org/10.3390/nano11051258
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