Gate controlled spin pumping at a quantum spin Hall edge
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Journal ArticleDate:
2013Access:
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Awadhesh Narayan, Aaron Hurley and Stefano Sanvito, Gate controlled spin pumping at a quantum spin Hall edge, Applied Physics Letters, 103, 2013, 142407-Download Item:
Abstract:
We propose a four-terminal device designed to manipulate by all electrical means the spin of a magnetic adatom positioned at the edge of a quantum spin Hall insulator. We show that an electrical gate, able to tune the interface resistance between a quantum spin Hall insulator and the source and drain electrodes, can switch the device between two regimes: one where the system exhibits spin pumping and the other where the adatom remains in its ground state. This demonstrates an all-electrical route to control single spins by exploiting helical edge states of topological materials.
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Grant Number
Science Foundation Ireland (SFI)
G20267
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http://people.tcd.ie/sanvitosDescription:
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Author: SANVITO, STEFANO; NARAYAN, AWADHESH
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Science Foundation Ireland (SFI)Type of material:
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Applied Physics Letters103
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PhysicsSubject (TCD):
Nanoscience & MaterialsDOI:
http://dx.doi.org/10.1063/1.4824068Metadata
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