Current bistability and hysteresis in strongly correlated quantum wires |
| |
Authors: | Egger Grabert Koutouza Saleur Siano |
| |
Institution: | Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030 and Fakultat fur Physik, Albert-Ludwigs-Universitat, D-79104 Freiburg, Germany. |
| |
Abstract: | Nonequilibrium transport properties are determined exactly for an adiabatically contacted single-channel quantum wire containing one impurity. Employing the Luttinger liquid model with interaction parameter g, for very strong interactions g less, similar0.2, and sufficiently low temperatures, we find an S-shaped current-voltage relation. The unstable branch with negative differential conductance gives rise to current oscillations and hysteretic effects. These nonperturbative and nonlinear features appear only out of equilibrium. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|