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Quantized conductance of point contacts in a two-dimensional electron gas
Open accessAbstract
Ballistic point contacts, defined in the two-dimensional electron gas of a GaAs-AlGaAs heterostructure, have been studied in zero magnetic field. The conductance changes in quantized steps of ${e}^{2}$/\ensuremath{\pi}\ensuremath{\Elzxh} when the width, controlled by a gate on top of heterojunction, is varied. Up to sixteen steps are observed when the point contact is widened from 0 to 360 nm. An explanation is proposed, which assumes quantized transverse momentum in the point-contact region.
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Metadata
- Authors
- van Wees, B. J., van Houten, H., Beenakker, C. W. J., Williamson, J. G., Kouwenhoven, L. P., van der Marel, D., & Foxon, C. T.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1988-02-29
- Volume
- 60
- Issue
- 9
- Pages
- 848-850
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2110590541
- Cited by
- 3,161
- References
- 0
- FWCI
- 101.90
- Type
- journal article
- Language
- en
- Open access
- green
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- van Wees, B. J., van Houten, H., Beenakker, C. W. J., Williamson, J. G., Kouwenhoven, L. P., van der Marel, D., & Foxon, C. T. (1988). Quantized conductance of point contacts in a two-dimensional electron gas. Physical Review Letters. https://doi.org/10.1103/physrevlett.60.848
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