Interference of heavy holes in an Aharonov-Bohm ring

Dimitrije Stepanenko, Minchul Lee, Guido Burkard, and Daniel Loss
Phys. Rev. B 79, 235301 – Published 1 June 2009

Abstract

We study the coherent transport of heavy holes through a one-dimensional ring in the presence of spin-orbit coupling. Spin-orbit interaction of holes, cubic in the in-plane components of momentum, gives rise to an angular momentum-dependent spin texture of the eigenstates and influences transport. We analyze the dependence of the resulting differential conductance of the ring on hole polarization of the leads and the signature of the textures in the Aharonov-Bohm oscillations when the ring is in a perpendicular magnetic field. We find that the polarization-resolved conductance reveals whether the dominant spin-orbit coupling is of Dresselhaus or Rashba type, and that the cubic spin-orbit coupling can be distinguished from the conventional linear coupling by observing the four-peak structure in the Aharonov-Bohm oscillations.

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  • Received 16 January 2009

DOI:https://doi.org/10.1103/PhysRevB.79.235301

©2009 American Physical Society

Authors & Affiliations

Dimitrije Stepanenko1, Minchul Lee2, Guido Burkard3, and Daniel Loss1

  • 1Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
  • 2Centre de Physique Théorique, UMR6207, Case 907, Luminy, 13288 Marseille Cedex 9, France
  • 3Department of Physics, University of Konstanz, D-78457 Konstanz, Germany

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Issue

Vol. 79, Iss. 23 — 15 June 2009

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