Magnetoconductance of two point contacts in series
- 15 April 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 41 (12) , 8461-8464
- https://doi.org/10.1103/physrevb.41.8461
Abstract
The magnetic-field dependence of the conductance of two opposite point contacts in series is studied experimentally, for magnetic fields extending into the quantum Hall effect regime. The magnetoconductance has a nonmonotonic, ‘‘camel-back’’ shape, in quantitative agreement with a recent theory. In addition, Aharonov–Bohm-type periodic magnetoconductance oscillations are observed, which are attributed to circulating edge states in a shallow potential basin between the point contacts.Keywords
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