Magnetization transfer by a quantum ring device

Regular Article

Abstract

We show that a tight-binding model device consisting of a laterally connected ring at half filling in a tangent time-dependent magnetic field can in principle be designed to pump a purely spin current. The process exploits the spin-orbit interaction in the ring. This behavior is understood analytically and found to be robust with respect to temperature and small deviations from half filling.

Keywords

Mesoscopic and Nanoscale Systems 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Dipartimento di FisicaUniversità di Roma Tor VergataRomeItaly
  2. 2.Istituto Nazionale di Fisica Nucleare — Laboratori Nazionali di FrascatiFrascatiItaly

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