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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Friday, 25 July 2008
(at 13:00 in room 115, Hallwachsstr. 3)
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Persistent spin current and local spin density in a tubular 2DEG with Rashba spin-orbit coupling

Chien-Liang Chen



   






The properties of local spin current and local spin density in a tubular two-dimensional electron gas (2DEG) system with Rashba spin-orbit coupling (SOC) is investigated by Landauer-Keldysh formalism (LKF). In equilibrium cases (no bias voltage), it is this Rashba SOC that induces the persistent spin current with distinctive symmetry in the system in the absence of external magnetic field. In non-equilibrium cases, the numerical results show current-induced spin polarization phenomenon in the system. Moreover, a spin-independent impurity breaking the rotational symmetry of the system induces spin accumulation in non-equilibrium cases.

Invited by G. Cuniberti (nanoSeminar)

last modified: 2018.10.24 Mi
author: webadmin