Rendell, M.J. orcid.org/0000-0003-1689-8356, Liles, S.D. orcid.org/0000-0001-8657-6681, Srinivasan, A. et al. (4 more authors) (2022) Gate voltage dependent Rashba spin splitting in hole transverse magnetic focusing. Physical Review B, 105 (24). 245305. ISSN 2469-9950
Abstract
Magnetic focusing of charge carriers in two-dimensional systems provides a solid state version of a mass spectrometer. In the presence of a spin-orbit interaction, the first focusing peak splits into two spin dependent peaks, allowing focusing to be used to measure spin polarization and the strength of the spin-orbit interaction. In hole systems, the k3 dependence of the Rashba spin-orbit term allows the spatial separation of spins to be changed in situ using a voltage applied to an overall top gate. Here, we demonstrate that this can be used to control the splitting of the magnetic focusing peaks. Additionally, we compare the focusing peak splitting to that predicted by Shubnikov-de Haas oscillations and k·p band-structure calculations. We find that the focusing peak splitting is consistently larger than expected, suggesting further work is needed on understanding spin dependent magnetic focusing.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2022 American Physical Society. This is an author-produced version of a paper subsequently published in Physical Review B. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Ballistic transport; Magnetotransport; Rashba coupling; Shubnikov-de Haas effect; Spin-orbit coupling; Heterostructures; III-V semiconductors; Quantum wells; k dot p method |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 11 Apr 2023 14:50 |
Last Modified: | 11 Apr 2023 14:50 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Refereed: | Yes |
Identification Number: | 10.1103/physrevb.105.245305 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:198081 |