Nonlinear Response of a Clean One-Dimensional Wire
- 23 January 2004
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 92 (3) , 036805
- https://doi.org/10.1103/physrevlett.92.036805
Abstract
We study nonlinear transport in a clean one-dimensional wire fabricated by cleaved edge overgrowth in molecular beam epitaxy. At low electron densities, and with a large applied bias, we observe a feature in the differential conductance similar to the so-called "0.7 structure," found in quantum point contact devices. Using a simple model we suggest a link between this phenomenon, charge neutrality, and unidirectional dynamics in the wire.Keywords
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