Abstract
The nonlinear transport in a clean one-dimensional wire fabricated by cleaved edge overgrowth (CEO) in molecular beam epitaxy was studied. A feature in the differential conductance similar to the '0.7 structure', found in quantum point contact (QPC) devices, was observed. A link between this phenomenon, charge neutrality and unidirectional dynamics in the wire was suggested using a simple model. The results show that at low temperatures '0.7 structure' occurs whenever the applied bias is as large as 4 times the Fermi energy in the wire.
| Original language | English (US) |
|---|---|
| Article number | 036805 |
| Pages (from-to) | 368051-368054 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 92 |
| Issue number | 3 |
| State | Published - Jan 23 2004 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy