Krueckl, Viktor and Richter, Klaus (2012) Probing the band topology of mercury telluride through weak localization and antilocalization. SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 27 (12): 124006. ISSN 0268-1242,
Full text not available from this repository. (Request a copy)Abstract
We analyze the effect of weak localization (WL) and weak antilocalization (WAL) in the electronic transport through HgTe/CdTe quantum wells. We show that for increasing Fermi energy, the magnetoconductance of a diffusive system with inverted band ordering features a transition from WL to WAL and back, if spin-orbit interactions from bulk and structure inversion asymmetries can be neglected. This, and an additional splitting in the magnetoconductance profile, is a signature of the Berry phase arising for inverted band ordering and is not present in heterostructures with conventional ordering. In the presence of spin-orbit interaction, both band topologies exhibit WAL, which is distinctly energy dependent for quantum wells with inverted band ordering. This can be explained by an energy-dependent decomposition of the Hamiltonian into two blocks.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HGTE QUANTUM-WELLS; SPIN-ORBIT INTERACTION; SURFACE-STATES; PHASE; MAGNETORESISTANCE; TRANSITION; TRANSPORT; MATRIX; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 May 2020 05:42 |
| Last Modified: | 04 May 2020 05:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17687 |
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