Interference of heavy holes in an Aharonov-Bohm ring

Details Interference of heavy holes in an Aharonov-Bohm ring Interference of heavy holes in an Aharonov-Bohm ring

2008-11-27

arxiv.org/abs/0811.4566v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 11 figures

Scientific paper

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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