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arXiv · 1410.7662

Resonant Landau-Zener transitions in helical magnetic fields

P. Wojcik·J. Adamowski·M. Woloszyn·B. J. Spisak
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Abstract

The spin-dependent electron transport has been studied in magnetic semiconductor waveguides (nanowires) in the helical magnetic field. We have shown that -- apart from the known conductance dip located at the magnetic field equal to the helical-field amplitude $B_h$ -- the additional conductance dips (with zero conductance) appear at magnetic field different from $B_h$. This effect occuring in the non-adiabatic regime is explained as resulting from the resonant Landau-Zener transitions between the spin-splitted subbands.

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P. Wojcik, J. Adamowski, M. Woloszyn, B. J. Spisak. 2014-10-28. Resonant Landau-Zener transitions in helical magnetic fields. https://doi.org/10.1088/0268-1242%2F30%2F6%2F065007

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