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Proceedings Paper

Spin-dependent tunneling through a spin-orbit-split barrier
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Paper Abstract

In a crystal without inversion center, when the spin-orbit interaction is taken into account, it has been shown that the evanescent branches inside the forbidden band gap correspond to complex wave vectors. Here, we discuss possible tunneling phenomena associated with complex wave vectors. We demonstrate that in a case where the wave vector has orthogonal real and imaginary components, an almost standard tunneling process can be restored under crude approximations, analoguous to off-normal tunneling through a potential barrier. Any more accurate analysis is an open problem. In one-dimensional tunneling with a complex wave vector, no solution can be calculated under simple hypotheses.

Paper Details

Date Published: 2 February 2007
PDF: 5 pages
Proc. SPIE 6479, Quantum Sensing and Nanophotonic Devices IV, 64790A (2 February 2007); doi: 10.1117/12.717607
Show Author Affiliations
Henri-Jean Drouhin, Ecole Polytechnique, LSI, CNRS (France)
Jean-Eric Wegrowe, Ecole Polytechnique, LSI, CNRS (France)
T. L. Hoai Nguyen, Ecole Polytechnique, LSI, CNRS (France)
Univ. Paris-Sud (France)
Guy Fishman, Univ. Paris-Sud (France)

Published in SPIE Proceedings Vol. 6479:
Quantum Sensing and Nanophotonic Devices IV
Manijeh Razeghi; Gail J. Brown, Editor(s)

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