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Spin diffusion equations for hole-doped quantum wells and graphene

Speaker: 
Vincent Sacksteder (Sch. of Phys. & Math. Sci., NTU)
Date: 
Wed, 23/04/2014 - 11:00am to 12:00pm
Location: 
S13-M01-11 (Physics Conference Room)
Host: 
Vitor M. Pereira
Event Type: 
Seminars

Abstract

We obtain the spin-orbit interaction and spin-charge coupled transport equations of a two-dimensional heavy hole gas under the influence of strain and anisotropy. We predict an enhanced spin lifetime associated with a spin helix standing wave similar to the Persistent Spin Helix which exists in the two-dimensional electron gas with equal Rashba and Dresselhaus spin-orbit interactions. We also briefly discuss spin diffusion in graphene with adsorbed impurities.

Collaborators: Andrei Bernevig, Quansheng Wu, Aires Ferreira, Ivan Shelykh

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