Abstract
We evidence the possibility for coherent electrical manipulation of the spin orientation of topologically protected edge states in a low-symmetry quantum spin Hall insulator. By using a combination of ab initio simulations, symmetry-based modeling, and large-scale calculations of the spin Hall conductivity, it is shown that small electric fields can efficiently vary the spin textures of edge currents in monolayer 1T'-WTe2 by up to a 90-degree spin rotation, without jeopardizing their topological character. These findings suggest a new kind of gate-controllable spin-based device, topologically protected against disorder and of relevance for the development of topological spintronics.
| Original language | English |
|---|---|
| Article number | L161410 |
| Number of pages | 5 |
| Journal | Physical Review B |
| Volume | 106 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 21 Oct 2022 |
Bibliographical note
Funding Information:Acknowledgments. Supported by the EU H2020 Programme under Grants No. 881603 (Graphene Flagship), No 824140 (TOCHA, H2020-FETPROACT-01-2018), and No. 824143 (MaX Materials Design at the Exascale CoE) and by Sgrants PGC2018- 096955-B-C43 funded by MCIN/AEI/ 10.13039/501100011033 and by ERDF A way of making Europe and PCI2018-093120 funded by MCIN/AEI/ 10.13039/501100011033. Z.Z. acknowledges financial support by the by the Ramon y Cajal program RYC-2016-19344 (MINECO/AEI/FSE, UE), Netherlands Sector Plan program 20192023 and the NWO Gravitation programme “Materials for the Quantum Age” (QuMat) funded by the Ministry of Education, Culture and Science of the government of the Netherlands. R.C. acknowledges the funding from the EU H2020 Programme under the Marie Sklodoswka–Curie Grant No. 665919. J.Y., P.K., M.G.M., and Z.Z. acknowledge the computer resources at MareNostrum and the technical support provided by the Barcelona Supercomputing Center through Red Española de Supercomputación (Grants No. RES-FI-2020-1-0018, No. RES-FI-2020-1-0014, and No. RES-FI-2020-2-0039). M.J.V. acknowledges the Fonds de la Recherche Scientifique (FRS-FNRS Belgium) for PdR Grant No. T.0103.19 - ALPS, and ARC project DREAMS (G.A. 21/25-11) funded by Fedeŕation Wallonie Bruxelles and ULieǵe. ICN2 is funded by the Generalitat de Catalunya (CERCA Programme and Grants No. 2017SGR1506 and No. 2017SGR692), and is supported by the Severo Ochoa Centers of Excellence Program from Spanish MINECO under Grant No. SEV-2017-0706. We acknowledge a PRACE award granting access to MareNostrum4 at Barcelona Supercomputing Center (BSC), Spain (OptoSpin project id. 2020225411).
Publisher Copyright:
© 2022 American Physical Society.
Funding
Acknowledgments. Supported by the EU H2020 Programme under Grants No. 881603 (Graphene Flagship), No 824140 (TOCHA, H2020-FETPROACT-01-2018), and No. 824143 (MaX Materials Design at the Exascale CoE) and by Sgrants PGC2018- 096955-B-C43 funded by MCIN/AEI/ 10.13039/501100011033 and by ERDF A way of making Europe and PCI2018-093120 funded by MCIN/AEI/ 10.13039/501100011033. Z.Z. acknowledges financial support by the by the Ramon y Cajal program RYC-2016-19344 (MINECO/AEI/FSE, UE), Netherlands Sector Plan program 20192023 and the NWO Gravitation programme “Materials for the Quantum Age” (QuMat) funded by the Ministry of Education, Culture and Science of the government of the Netherlands. R.C. acknowledges the funding from the EU H2020 Programme under the Marie Sklodoswka–Curie Grant No. 665919. J.Y., P.K., M.G.M., and Z.Z. acknowledge the computer resources at MareNostrum and the technical support provided by the Barcelona Supercomputing Center through Red Española de Supercomputación (Grants No. RES-FI-2020-1-0018, No. RES-FI-2020-1-0014, and No. RES-FI-2020-2-0039). M.J.V. acknowledges the Fonds de la Recherche Scientifique (FRS-FNRS Belgium) for PdR Grant No. T.0103.19 - ALPS, and ARC project DREAMS (G.A. 21/25-11) funded by Fedeŕation Wallonie Bruxelles and ULieǵe. ICN2 is funded by the Generalitat de Catalunya (CERCA Programme and Grants No. 2017SGR1506 and No. 2017SGR692), and is supported by the Severo Ochoa Centers of Excellence Program from Spanish MINECO under Grant No. SEV-2017-0706. We acknowledge a PRACE award granting access to MareNostrum4 at Barcelona Supercomputing Center (BSC), Spain (OptoSpin project id. 2020225411).