Perroni, C. A. and Bercioux, D. and Ramaglia, V. Marigliano and Cataudella, V. (2007) Rashba quantum wire: exact solution and ballistic transport. JOURNAL OF PHYSICS-CONDENSED MATTER, 19 (18): 186227. ISSN 0953-8984,
Full text not available from this repository.Abstract
The effect of Rashba spin-orbit interaction in quantum wires with hard-wall boundaries is discussed. The exact wavefunction and eigenvalue equation are worked out, pointing out the mixing between the spin and spatial parts. The spectral properties are also studied within perturbation theory with respect to the strength of the spin - orbit interaction and diagonalization procedure. A comparison is made with the results of a simple model, the two-band model, that takes account only of the first two sub-bands of the wire. Finally, the transport properties within the ballistic regime are analytically calculated for the twoband model and through a tight-binding Green function for the entire system. Single and double interfaces separating regions with different strengths of spin orbit interaction are analysed by injecting carriers into the first and the second sub-band. It is shown that in the case of a single interface the spin polarization in the Rashba region is different from zero, and in the case of two interfaces the spin polarization shows oscillations due to spin-selective bound states.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DOUBLE-REFRACTION; SPIN; SPINTRONICS; WELLS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Dec 2020 08:48 |
| Last Modified: | 10 Dec 2020 08:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32768 |
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