TITLE

Spin-orbit engineering of semiconductor heterostructures: A spin-sensitive quantum-phase shifter

AUTHOR(S)
Nguyen, T. L. Hoai; Drouhin, Henri-Jean; Wegrowe, Jean-Eric; Fishman, Guy
PUB. DATE
August 2009
SOURCE
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p082108
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In noncentrosymmetric semiconductors with zinc-blende structure grown along the [110] crystallographic direction, electrons with up- and down-spins undergo different quantum-phase shifts upon tunneling, which can be viewed as resulting from spin precession around a complex magnetic field. There is no spin filtering but a pure spin dephasing. The phase shift of the transmitted wave is proportional to the overall barrier-material thickness. We show that a device incorporating a number of resonant tunnel barriers constitutes an efficient quantum-phase shifter.
ACCESSION #
43944854

 

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