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Gate controlled spin pumping at a quantum spin Hall edge

Creator:

SANVITO, STEFANO; NARAYAN, AWADHESH;

Subject Keywords: Physics; Nanoscience & Materials;
Region:
Description:

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.

Related: http://scitation.aip.org/content/aip/journal/apl/103/14/10.1063/1.4824068
Suggested citation:

SANVITO, STEFANO; NARAYAN, AWADHESH; . () Gate controlled spin pumping at a quantum spin Hall edge [Online]. Available from: http://publichealthwell.ie/node/823364 [Accessed: 26th June 2019].

  

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