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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 und 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), S. 124006.Veröffentlichungsdatum dieses Volltextes: 15 Feb 2022 05:30
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DOI zum Zitieren dieses Dokuments: 10.5283/epub.51589
Dies ist die aktuelle Version dieses Eintrags.
Zusammenfassung
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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| Dokumentenart | Artikel | ||||||
| Titel eines Journals oder einer Zeitschrift | Semiconductor Science and Technology | ||||||
| Verlag: | Institute of Physics | ||||||
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| Band: | 27 | ||||||
| Nummer des Zeitschriftenheftes oder des Kapitels: | 12 | ||||||
| Seitenbereich: | S. 124006 | ||||||
| Datum | 15 November 2012 | ||||||
| Zusätzliche Informationen (Öffentlich) | This article was also highlighted in Europhysics News Vol. 44 No. 2. | ||||||
| Institutionen | Physik > Institut für Theoretische Physik > Lehrstuhl Professor Richter > Arbeitsgruppe Klaus Richter | ||||||
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| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||||
| Status | Veröffentlicht | ||||||
| Begutachtet | Ja, diese Version wurde begutachtet | ||||||
| An der Universität Regensburg entstanden | Ja | ||||||
| Dokumenten-ID | 51589 |
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