Anomalies in the conduction edge of quantum wires
| dc.creator | Rejec, T. | |
| dc.creator | Ramsak, A. | |
| dc.creator | Jefferson, J. H. | |
| dc.date | 2000-07-26 | |
| dc.date.accessioned | 2026-07-07T02:38:19Z | |
| dc.date.available | 2026-07-07T02:38:19Z | |
| dc.description | We study the conductance threshold of clean nearly straight quantum wires in which an electron is bound. We show that such a system exhibits spin-dependent conductance structures on the rising edge to the first conductance plateau, one near 0.25(2e^2/h), related to a singlet resonance, and one near 0.75(2e^2/h), related to a triplet resonance. As a quantitative example we solve exactly the scattering problem for two-electrons in a wire with circular cross-section and a weak bulge. From the scattering matrix we determine conductance via the Landauer-Buettiker formalism. The conductance anomalies are robust and survive to temperatures of a few degrees. With increasing magnetic field the conductance exhibits a plateau at e^2/h, consistent with recent experiments. | |
| dc.description | NATO ARW Bled 2000 | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0007419 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0007419 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/16625 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Anomalies in the conduction edge of quantum wires | |
| dc.type | text |