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Universal Rashba Spin Precession of Two-Dimensional Electrons and Holes

Marco G. Pala·Michele Governale·Jürgen König·Ulrich Zülicke
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Abstract

We study spin precession due to Rashba spin splitting of electrons and holes in semiconductor quantum wells. Based on a simple analytical expression that we derive for the current modulation in a broad class of experimental situations of ferromagnet/nonmagnetic semiconductor/ferromagnet hybrid structures, we conclude that the Datta-Das spin transistor (i) is feasible with holes and (ii) its functionality is not affected by integration over injection angles. The current modulation shows a universal oscillation period, irrespective of the different forms of the Rashba Hamiltonian for electrons and holes. The analytic formulas approximate extremely well exact numerical calculations of a more elaborate Kohn--Luttinger model.

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Marco G. Pala, Michele Governale, Jürgen König, Ulrich Zülicke. 2004-03-30. Universal Rashba Spin Precession of Two-Dimensional Electrons and Holes. https://doi.org/10.1209/epl%2Fi2003-10195-x

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