Conductance fluctuations and non-diffusive motion in GaAs/AlGaAs heterojunction wires
- 24 September 1990
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 2 (38) , 7847-7852
- https://doi.org/10.1088/0953-8984/2/38/010
Abstract
The authors have measured the magnetoresistance of one-dimensional GaAs heterojunction wires at temperatures down to 0.04 K and in magnetic fields of up to 1.2 T. At low magnetic fields they observe universal conductance fluctuations with a temperature dependence consistent with a temperature independent phase breaking length. This unexpected result is not predicted by theory and they speculate that it may be related to the breakdown of diffusive motion.Keywords
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