Conductance of Rashba spin-split systems with ferromagnetic contacts
Abstract
We study theoretically the conductance of heterostructures with ferromagnetic (F) conductors and a two-dimensional electron gas with Rashba (R) spin-orbit interaction using a two-channel Landauer formula. Assuming a one-dimensional model, we first find the S matrix for the FR interface. This result is then applied to different devices such as a FRF structure, first suggested by Datta and Das [Appl. Phys. Lett. 56, 665 (1990)]. We find analytic results for the conductance for the case of collinear magnetization.
- Publication:
-
Physical Review B
- Pub Date:
- July 2002
- DOI:
- 10.1103/PhysRevB.66.033304
- arXiv:
- arXiv:cond-mat/0112175
- Bibcode:
- 2002PhRvB..66c3304L
- Keywords:
-
- 72.25.Dc;
- Spin polarized transport in semiconductors;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 4 pages, 1 figure