Geometric Correlations and Breakdown of Mesoscopic Universality in Spin Transport

İ. Adagideli, Ph. Jacquod, M. Scheid, M. Duckheim, D. Loss, and K. Richter
Phys. Rev. Lett. 105, 246807 – Published 10 December 2010

Abstract

We construct a unified semiclassical theory of charge and spin transport in chaotic ballistic and disordered diffusive mesoscopic systems with spin-orbit interaction. Neglecting dynamic effects of spin-orbit interaction, we reproduce the random matrix theory results that the spin conductance fluctuates universally around zero average. Incorporating these effects into the theory, we show that geometric correlations generate finite average spin conductances, but that they do not affect the charge conductance to leading order. The theory, which is confirmed by numerical transport calculations, allows us to investigate the entire range from the weak to the previously unexplored strong spin-orbit regime, where the spin rotation time is shorter than the momentum relaxation time.

  • Figure
  • Received 25 August 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.246807

The American Physical Society

Authors & Affiliations

İ. Adagideli1, Ph. Jacquod2, M. Scheid3, M. Duckheim4, D. Loss5, and K. Richter3

  • 1Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, 34956 Istanbul, Turkey
  • 2Physics Department, University of Arizona, 1118 E. 4th Street, Tucson, Arizona 85721, USA
  • 3Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany
  • 4Dahlem Center for Complex Quantum Systems, Freie Universität Berlin, 14195 Berlin, Germany
  • 5Department of Physics, University of Basel, CH-4056 Basel, Switzerland

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Issue

Vol. 105, Iss. 24 — 10 December 2010

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