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Frank, Tobias ; Faria Junior, Paulo E. ; Zollner, Klaus ; Fabian, Jaroslav

Emergence of radial Rashba spin-orbit fields in twisted van der Waals heterostructures

Frank, Tobias, Faria Junior, Paulo E. , Zollner, Klaus and Fabian, Jaroslav (2024) Emergence of radial Rashba spin-orbit fields in twisted van der Waals heterostructures. Physical Review B 109, L241403.

Date of publication of this fulltext: 14 May 2024 10:46
Article
DOI to cite this document: 10.5283/epub.58234


Abstract

Rashba spin-orbit coupling is a quintessential spin interaction appearing in virtually any electronic heterostructure. Its paradigmatic spin texture in the momentum space forms a tangential vector field. Using first-principles investigations, we demonstrate that in twisted homobilayers and hetero-multilayers, the Rashba coupling can be predominantly radial, parallel to the momentum. Specifically, ...

Rashba spin-orbit coupling is a quintessential spin interaction appearing in virtually any electronic heterostructure. Its paradigmatic spin texture in the momentum space forms a tangential vector field. Using first-principles investigations, we demonstrate that in twisted homobilayers and hetero-multilayers, the Rashba coupling can be predominantly radial, parallel to the momentum. Specifically, we study four experimentally relevant structures: twisted bilayer graphene (Gr), twisted bilayer WSe2, and twisted multilayers WSe2/Gr/WSe2 and WSe2/Gr/Gr/WSe2. We show, that the Rashba spin-orbit field texture in such structures can be controlled by an electric field, allowing to tune it from radial to tangential. Such spin-orbit engineering should be useful for designing novel spin-charge conversion and spin-orbit torque schemes, as well as for controlling correlated phases and superconductivity in van der Waals materials.



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Details

Item typeArticle
Journal or Publication TitlePhysical Review B
Publisher:American Physical Society
Volume:109
Page Range:L241403
Date12 June 2024
InstitutionsPhysics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian
Identification Number
ValueType
2402.12353arXiv ID
https://doi.org/10.1103/PhysRevB.109.L241403DOI
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-582342
Item ID58234

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