Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System

Spin-orbit coupling (SOC) is pivotal for various fundamental spin-dependent phenomena in solids and their technological applications. In semiconductors, these phenomena have been so far studied in relatively weak electron-electron interaction regimes, where the single electron picture holds. However...

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Autores: Maryenko, D., Kawamura, M., Ernst, Arthur, Dugaev, V. K., Sherman, Evgeny, Kriener, M., Bahramy, M. S., Kozuka, Y., Kawasaki, M.
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/51821
Acceso en línea:http://hdl.handle.net/10810/51821
Access Level:acceso abierto
Palabra clave:spin-orbit coupling
semiconductors
unconventional electronic phases
electron-electron interactions
emergent spintronic phenomena
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spelling Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron SystemMaryenko, D.Kawamura, M.Ernst, ArthurDugaev, V. K.Sherman, EvgenyKriener, M.Bahramy, M. S.Kozuka, Y.Kawasaki, M.spin-orbit couplingsemiconductorsunconventional electronic phaseselectron-electron interactionsemergent spintronic phenomenaSpin-orbit coupling (SOC) is pivotal for various fundamental spin-dependent phenomena in solids and their technological applications. In semiconductors, these phenomena have been so far studied in relatively weak electron-electron interaction regimes, where the single electron picture holds. However, SOC can profoundly compete against Coulomb interaction, which could lead to the emergence of unconventional electronic phases. Since SOC depends on the electric field in the crystal including contributions of itinerant electrons, electron-electron interactions can modify this coupling. Here we demonstrate the emergence of theSOC effect in a high-mobility two-dimensional electron system in a simple band structure MgZnO/ZnO semiconductor. This electron system alsofeatures strong electron-electron interaction effects. By changing the carrier density with Mg-content, we tune the SOC strength and achieve its interplay with electron-electron interaction. These systems pave a way to emergent spintronic phenomena in strong electron correlation regimes and to the formation of quasiparticles with the electron spin strongly coupled to the density.This work was supported by the National Science Center in Poland as a research project No. DEC-2017/27/B/ST3/02881. A.E. acknowledges financial support from the DFG through priority program SPP1666 (Topological Insulators), SFB-TRR227, and OeAD Grants No. HR 07/2018 and No. PL 03/2018. E.Y.S. acknowledges support by the Spanish Ministry of Science and the European Regional Development Fund through PGC2018-101355-B-I00 (MCIU/AEI/ FEDER, UE) and the Basque Country Government through Grant No. IT986-16. Y.K. acknowledges support by JST, PRESTO Grant Number JPMJPR1763. M. Kawasaki acknowledges support by JST, CREST No. JPMJCR16F1.Springer202120212021info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/51821reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/PGC2018-101355-B-I00/https://www.nature.com/articles/s41467-021-23483-4info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)Atribución 3.0 Españaoai:addi.ehu.eus:10810/518212026-06-18T09:23:17Z
dc.title.none.fl_str_mv Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
title Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
spellingShingle Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
Maryenko, D.
spin-orbit coupling
semiconductors
unconventional electronic phases
electron-electron interactions
emergent spintronic phenomena
title_short Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
title_full Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
title_fullStr Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
title_full_unstemmed Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
title_sort Interplay of Spin-Orbit Coupling and Coulomb Interaction in ZnO-Based Electron System
dc.creator.none.fl_str_mv Maryenko, D.
Kawamura, M.
Ernst, Arthur
Dugaev, V. K.
Sherman, Evgeny
Kriener, M.
Bahramy, M. S.
Kozuka, Y.
Kawasaki, M.
author Maryenko, D.
author_facet Maryenko, D.
Kawamura, M.
Ernst, Arthur
Dugaev, V. K.
Sherman, Evgeny
Kriener, M.
Bahramy, M. S.
Kozuka, Y.
Kawasaki, M.
author_role author
author2 Kawamura, M.
Ernst, Arthur
Dugaev, V. K.
Sherman, Evgeny
Kriener, M.
Bahramy, M. S.
Kozuka, Y.
Kawasaki, M.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv spin-orbit coupling
semiconductors
unconventional electronic phases
electron-electron interactions
emergent spintronic phenomena
topic spin-orbit coupling
semiconductors
unconventional electronic phases
electron-electron interactions
emergent spintronic phenomena
description Spin-orbit coupling (SOC) is pivotal for various fundamental spin-dependent phenomena in solids and their technological applications. In semiconductors, these phenomena have been so far studied in relatively weak electron-electron interaction regimes, where the single electron picture holds. However, SOC can profoundly compete against Coulomb interaction, which could lead to the emergence of unconventional electronic phases. Since SOC depends on the electric field in the crystal including contributions of itinerant electrons, electron-electron interactions can modify this coupling. Here we demonstrate the emergence of theSOC effect in a high-mobility two-dimensional electron system in a simple band structure MgZnO/ZnO semiconductor. This electron system alsofeatures strong electron-electron interaction effects. By changing the carrier density with Mg-content, we tune the SOC strength and achieve its interplay with electron-electron interaction. These systems pave a way to emergent spintronic phenomena in strong electron correlation regimes and to the formation of quasiparticles with the electron spin strongly coupled to the density.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/51821
url http://hdl.handle.net/10810/51821
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/PGC2018-101355-B-I00/
https://www.nature.com/articles/s41467-021-23483-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)
Atribución 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)
Atribución 3.0 España
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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