McIndo, C.J., Hayes, D.G., Papageorgiou, A. et al. (6 more authors) (2018) Optical Microscopy as a probe of the rate limiting transport lifetime in InSb/Al1-xInxSb quantum wells. In: Journal of Physics: Conference Series. Advances in Quantum Transport in Low Dimensional Systems, 04-05 Sep 2017, London, UK. IOP Publishing
Abstract
Recent reports of magnetotransport measurements of InSb/Al 1-x In x Sb quantum well structures at low temperature (3 K) have shown the need for inclusion of a new scattering mechanism not present in traditional transport lifetime models. Observations and analysis of characteristic surface structures using differential interference contrast DIC (Nomarski) optical imaging have extracted representative average grain feature sizes for this surface structure and shown these features to be the limiting low temperature scattering mechanism. We have subsequently modelled the potential profile of these surface structures using Landauer-Büttiker tunnelling calculations and a combination of a Monte-Carlo simulation and Drude model for mobility. This model matches experimentally measured currents and mobilities at low temperatures, giving a range of possible barrier heights and widths, as well modelling the theoretical trend in mobility with temperature.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Content from this work may be used under the terms of theCreative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 Apr 2018 11:21 |
Last Modified: | 19 Dec 2022 17:17 |
Published Version: | https://doi.org/10.1088/1742-6596/964/1/012005 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1742-6596/964/1/012005 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:129126 |