Electron-electron interaction effects in quantum point contacts

Autor:	Lunde, Anders Mathias, De Martino, Alessandro, Egger, Reinhold, Flensberg, Karsten
Rok vydání:	2007
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
Popis:	We consider interaction effects in quantum point contacts on the first quantization plateau, taking into account all non momentum-conserving processes. We compute low-temperature linear and non-linear conductance, shot noise, and thermopower by perturbation theory, and show that they are consistent with experimental observations on the so-called "0.7 anomaly". The full temperature-dependent conductance is obtained from self-consistent second-order perturbation theory and approaches ~ e^2/h at higher temperatures, but still smaller than the Fermi temperature. Comment: 4 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0707.1989 Zobrazit plný text záznamu View this record from Arxiv