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Article: Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe2
Title | Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe2 |
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Authors | |
Issue Date | 30-Sep-2023 |
Publisher | Nature Research |
Citation | Nature Communications, 2023, v. 14, n. 1 How to Cite? |
Abstract | Van der Waals interactions with transition metal dichalcogenides were shown to induce strong spin-orbit coupling (SOC) in graphene, offering great promises to combine large experimental flexibility of graphene with unique tuning capabilities of the SOC. Here, we probe SOC-driven band splitting and electron dynamics in graphene on WSe2 by measuring ballistic transverse magnetic focusing. We found a clear splitting in the first focusing peak whose evolution in charge density and magnetic field is well reproduced by calculations using the SOC strength of ~ 13 meV, and no splitting in the second peak that indicates stronger Rashba SOC. Possible suppression of electron-electron scatterings was found in temperature dependence measurement. Further, we found that Shubnikov-de Haas oscillations exhibit a weaker band splitting, suggesting that it probes different electron dynamics, calling for a new theory. Our study demonstrates an interesting possibility to exploit ballistic electron motion pronounced in graphene for emerging spin-orbitronics. |
Persistent Identifier | http://hdl.handle.net/10722/337476 |
ISSN | 2023 Impact Factor: 14.7 2023 SCImago Journal Rankings: 4.887 |
DC Field | Value | Language |
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dc.contributor.author | Rao, Qing | - |
dc.contributor.author | Kang, Wun-Hao | - |
dc.contributor.author | Xue, Hongxia | - |
dc.contributor.author | Ye, Ziqing | - |
dc.contributor.author | Feng, Xuemeng | - |
dc.contributor.author | Watanabe, Kenji | - |
dc.contributor.author | Taniguchi, Takashi | - |
dc.contributor.author | Wang, Ning | - |
dc.contributor.author | Liu, Ming-Hao | - |
dc.contributor.author | Ki, Dong-Keun | - |
dc.date.accessioned | 2024-03-11T10:21:11Z | - |
dc.date.available | 2024-03-11T10:21:11Z | - |
dc.date.issued | 2023-09-30 | - |
dc.identifier.citation | Nature Communications, 2023, v. 14, n. 1 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | http://hdl.handle.net/10722/337476 | - |
dc.description.abstract | <p>Van der Waals interactions with transition metal dichalcogenides were shown to induce strong spin-orbit coupling (SOC) in graphene, offering great promises to combine large experimental flexibility of graphene with unique tuning capabilities of the SOC. Here, we probe SOC-driven band splitting and electron dynamics in graphene on WSe<sub>2</sub> by measuring ballistic transverse magnetic focusing. We found a clear splitting in the first focusing peak whose evolution in charge density and magnetic field is well reproduced by calculations using the SOC strength of ~ 13 meV, and no splitting in the second peak that indicates stronger Rashba SOC. Possible suppression of electron-electron scatterings was found in temperature dependence measurement. Further, we found that Shubnikov-de Haas oscillations exhibit a weaker band splitting, suggesting that it probes different electron dynamics, calling for a new theory. Our study demonstrates an interesting possibility to exploit ballistic electron motion pronounced in graphene for emerging spin-orbitronics.<br></p> | - |
dc.language | eng | - |
dc.publisher | Nature Research | - |
dc.relation.ispartof | Nature Communications | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Ballistic transport spectroscopy of spin-orbit-coupled bands in monolayer graphene on WSe2 | - |
dc.type | Article | - |
dc.description.nature | preprint | - |
dc.identifier.doi | 10.1038/s41467-023-41826-1 | - |
dc.identifier.volume | 14 | - |
dc.identifier.issue | 1 | - |
dc.identifier.eissn | 2041-1723 | - |
dc.identifier.issnl | 2041-1723 | - |