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.
Original language | English (US) |
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Pages (from-to) | 4 |
Number of pages | 1 |
Journal | Physical review letters |
Volume | 92 |
Issue number | 3 |
DOIs | |
State | Published - 2004 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy