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

Henri-Jean Drouhin; Jean-Eric Wegrowe; T. L. Hoai Nguyen; Guy Fishman

doi:10.1117/12.717607

2 February 2007 Spin-dependent tunneling through a spin-orbit-split barrier

Henri-Jean Drouhin, Jean-Eric Wegrowe, T. L. Hoai Nguyen, Guy Fishman

Proceedings Volume 6479, Quantum Sensing and Nanophotonic Devices IV; 64790A (2007) https://doi.org/10.1117/12.717607
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

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.

Citation Download Citation

Henri-Jean Drouhin, Jean-Eric Wegrowe, T. L. Hoai Nguyen, and Guy Fishman "Spin-dependent tunneling through a spin-orbit-split barrier", Proc. SPIE 6479, Quantum Sensing and Nanophotonic Devices IV, 64790A (2 February 2007); https://doi.org/10.1117/12.717607

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