Tunable spin-charge conversion through topological phase transitions in zigzag nanoribbons

Hang Li, Aurelien Manchon

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We study spin-orbit torques and charge pumping in magnetic quasi-one-dimensional zigzag nanoribbons with a hexagonal lattice, in the presence of large intrinsic spin-orbit coupling. Such a system experiences a topological phase transition from a trivial band insulator to a quantum spin Hall insulator by tuning of either the magnetization direction or the intrinsic spin-orbit coupling. We find that the spin-charge conversion efficiency (i.e., spin-orbit torque and charge pumping) is dramatically enhanced at the topological transition, displaying a substantial angular anisotropy.
Original languageEnglish (US)
JournalPhysical Review B
Volume93
Issue number23
DOIs
StatePublished - Jun 29 2016

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