Knox, CS orcid.org/0000-0002-4673-5649, Morrison, C orcid.org/0000-0002-2709-9982, Herling, F orcid.org/0000-0002-4304-8173 et al. (5 more authors) (2017) Partial hybridisation of electron-hole states in an InAs/GaSb double quantum well heterostructure. Semiconductor Science and Technology, 32 (10). 104002. ISSN 0268-1242
Abstract
InAs/GaSb coupled quantum well heterostructures are important semiconductor systems with applications ranging from spintronics to photonics. Most recently, InAs/GaSb heterostructures have been identified as candidate two-dimensional topological insulators, predicted to exhibit helical edge conduction via fully spin-polarised carriers. We study an InAs/GaSb double quantum well heterostructure with an AlSb barrier to decouple partially the 2D electrons and holes, and find conduction consistent with a 2D hole gas, with an effective mass of 0.235 ± 0.005 m 0, existing simultaneously with hybridised carriers with an effective mass of 0.070 ± 0.005 m 0, where m 0 is the bare electron mass.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article published in Semiconductor Science and Technology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1361-6641/aa827e |
Keywords: | InAs/GaSb; effective mass; hybridisation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/M000923/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Sep 2017 11:21 |
Last Modified: | 13 Dec 2024 15:58 |
Status: | Published |
Publisher: | IOP Publishing |
Identification Number: | 10.1088/1361-6641/aa827e |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:121218 |