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Weak localization and Berry phases in HgTe quantum wells (Vol. 44 No. 2) = Verweis auf: Probing the Band Topology of Mercury Telluride through Weak Localization and Antilocalization
Krueckl, Viktor and Richter, Klaus (2012) Weak localization and Berry phases in HgTe quantum wells (Vol. 44 No. 2) = Verweis auf: Probing the Band Topology of Mercury Telluride through Weak Localization and Antilocalization. Semiconductor Science and Technology 27 (12), p. 124006.Date of publication of this fulltext: 15 Feb 2022 05:30
Article
DOI to cite this document: 10.5283/epub.51589
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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, ...
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.
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| Item type | Article | ||||||
| Journal or Publication Title | Semiconductor Science and Technology | ||||||
| Publisher: | Institute of Physics | ||||||
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| Volume: | 27 | ||||||
| Number of Issue or Book Chapter: | 12 | ||||||
| Page Range: | p. 124006 | ||||||
| Date | 15 November 2012 | ||||||
| Additional Information (public) | This article was also highlighted in Europhysics News Vol. 44 No. 2. | ||||||
| Institutions | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter | ||||||
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| Dewey Decimal Classification | 500 Science > 530 Physics | ||||||
| Status | Published | ||||||
| Refereed | Yes, this version has been refereed | ||||||
| Created at the University of Regensburg | Yes | ||||||
| Item ID | 51589 |
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