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Magnetic Depopulation of 1D Subbands in a Narrow 2D Electron Gas in a GaAs:AlGaAs Heterojunction
Abstract
We present results on the transverse magnetoconductance in the range 0.3 to 8 T of a narrow, variable-width channel in a GaAs:AlGaAs heterojunction. As the width of the channel is decreased below 0.25 \ensuremath{\mu}m the structure in the magnetoconductance changes from Shubnikov-de Haas oscillations to the magnetic depopulation of one-dimensional subbands. A semiclassical WKB calculation is presented which gives good agreement with experiment.
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“Finally, the primary oscillation period corresponds to the Aharonov-Bohm h/e quantization, while the Altshuler-Aronov-Spivak (AAS) oscillation with h/ 2 e period [27, 28] originating from weak (anti) localization is suppressed.”
From Aharonov–Bohm interference in topological insulator nanoribbons (2010) · cites this paper as [27]
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Metadata
- Authors
- Berggren, K. F., Thornton, T. J., Newson, D. J., & Pepper, M.
- Affiliations
- University of Cambridge (GB)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1986-10-06
- Volume
- 57
- Issue
- 14
- Pages
- 1769-1772
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W1970923091
- Cited by
- 363
- References
- 12
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 1 · 2021: 5 · 2020: 1 · 2019: 3 · 2018: 3 · 2017: 2 · 2016: 4 · 2014: 3 · 2013: 2 · 2012: 4
- FWCI
- 18.77
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Quantum and electron transport phenomena
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Semiconductor Devices and Circuit Design
- Keywords
- one-dimensional subbands, AlGaAs/GaAs heterojunction, Shubnikov-de Haas oscillations, channel width dependence, quantum Hall effect
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