Lassl, Andreas and Schlagheck, Peter and Richter, Klaus (2007) Effects of short-range interactions on transport through quantum point contacts: A numerical approach. PHYSICAL REVIEW B, 75 (4): 045346. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
We study electronic transport through a quantum point contact, where the interaction between the electrons is approximated by a contact potential. Our numerical approach is based on the nonequilibrium Green-function technique which is evaluated at the Hartree-Fock level. We show that this approach allows us to reproduce relevant features of the so-called "0.7 anomaly" observed in the conductance at low temperatures, including the characteristic features in recent shot-noise measurements. This is consistent with a spin-splitting interpretation of the process, and indicates that the 0.7 anomaly should also be observable in transport experiments with ultracold fermionic atoms.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BOSE-EINSTEIN CONDENSATION; DIMENSIONAL ELECTRON-GAS; SPIN POLARIZATION; CONDUCTANCE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Jan 2021 06:10 |
| Last Modified: | 14 Jan 2021 06:10 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33545 |
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