Spin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers

Janus dichalcogenide multilayers provide a paradigmatic platform to engineer electronic phenomena dominated by spin–orbit coupling. Their unique spin–orbit effects stem from the mirror symmetry breaking in each layer, which induces a colossal Rashba spin–orbit effect in comparison with the conventio...

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Main Authors: D Soriano, J L Lado
Format: Article
Language:English
Published: IOP Publishing 2021-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/ac12fb
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author D Soriano
J L Lado
author_facet D Soriano
J L Lado
author_sort D Soriano
collection DOAJ
description Janus dichalcogenide multilayers provide a paradigmatic platform to engineer electronic phenomena dominated by spin–orbit coupling. Their unique spin–orbit effects stem from the mirror symmetry breaking in each layer, which induces a colossal Rashba spin–orbit effect in comparison with the conventional dichalcogenide counterparts. Here we put forward twisted Janus dichalcogenide bilayers as a simple platform to realize spin–orbit correlated states. We demonstrate the emergence of flat bands featuring strong spin-momentum locking and the emergence of symmetry broken states with associated non-coplanar magnetization when interactions are included. We further show that the symmetry broken states can be controlled by means of a magnetic substrate, strongly impacting the non-coplanar magnetic texture of the moire unit cell. Our results put forward twisted Janus multilayers as a powerful platform to explore spin–orbit correlated physics, and highlighting the versatility of magnetic substrates to control unconventional moire magnetism.
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spelling doaj.art-55b215d0775143efbd554c35d44e4d502023-08-08T15:36:31ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123707303810.1088/1367-2630/ac12fbSpin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayersD Soriano0https://orcid.org/0000-0003-2358-526XJ L Lado1https://orcid.org/0000-0002-9916-1589Radboud University , Institute for Molecules and Materials, NL-6525 AJ Nijmegen, The Netherlands; Dipartimento di Ingegneria dell’Informazione, Universitá di Pisa , 56122 Pisa, ItalyDepartment of Applied Physics, Aalto University , 00076 Aalto, Espoo, FinlandJanus dichalcogenide multilayers provide a paradigmatic platform to engineer electronic phenomena dominated by spin–orbit coupling. Their unique spin–orbit effects stem from the mirror symmetry breaking in each layer, which induces a colossal Rashba spin–orbit effect in comparison with the conventional dichalcogenide counterparts. Here we put forward twisted Janus dichalcogenide bilayers as a simple platform to realize spin–orbit correlated states. We demonstrate the emergence of flat bands featuring strong spin-momentum locking and the emergence of symmetry broken states with associated non-coplanar magnetization when interactions are included. We further show that the symmetry broken states can be controlled by means of a magnetic substrate, strongly impacting the non-coplanar magnetic texture of the moire unit cell. Our results put forward twisted Janus multilayers as a powerful platform to explore spin–orbit correlated physics, and highlighting the versatility of magnetic substrates to control unconventional moire magnetism.https://doi.org/10.1088/1367-2630/ac12fbJanus dichalcogenidesspinorbitronicscorrelated twisted materials
spellingShingle D Soriano
J L Lado
Spin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers
New Journal of Physics
Janus dichalcogenides
spinorbitronics
correlated twisted materials
title Spin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers
title_full Spin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers
title_fullStr Spin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers
title_full_unstemmed Spin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers
title_short Spin–orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers
title_sort spin orbit correlations and exchange bias control in twisted janus dichalcogenide multilayers
topic Janus dichalcogenides
spinorbitronics
correlated twisted materials
url https://doi.org/10.1088/1367-2630/ac12fb
work_keys_str_mv AT dsoriano spinorbitcorrelationsandexchangebiascontrolintwistedjanusdichalcogenidemultilayers
AT jllado spinorbitcorrelationsandexchangebiascontrolintwistedjanusdichalcogenidemultilayers