pith. sign in

arxiv: 1806.08847 · v4 · pith:CCDI6OZ5new · submitted 2018-06-22 · ❄️ cond-mat.mes-hall

Spin mixing between subbands and extraordinary Landau levels shift in wide HgTe quantum wells

classification ❄️ cond-mat.mes-hall
keywords spinlandaulevelsmagneticfieldaveragebandbehavior
0
0 comments X
read the original abstract

We present both the experimental and theoretical investigation of a non-trivial electron Landau levels shift in magnetic field in wide ~20 nm HgTe quantum wells: Landau levels split under magnetic fields but become degenerate again when magnetic field increases. We reproduced this behavior qualitatively within an isotropic 6-band Kane model, then using semiclassical calculations we showed this behavior is due to the mixing of the conduction band with total spin 3/2 with the next well subband with spin 1/2 which reduces the average vertical spin from 3/2 to around 1. This change of the average spin changes the Berry phase explaining the evolution of Landau levels under magnetic field.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.