Saarikoski, Henri and Dollinger, Tobias and Richter, Klaus (2012) Spin transmission control in helical magnetic fields. PHYSICAL REVIEW B, 86 (16): 165407. ISSN 1098-0121,
Full text not available from this repository. (Request a copy)Abstract
We calculate spin transport in two-dimensional wave guides in the presence of spatially modulated Zeeman-split energy bands. We show that in a regime where the spin evolution is predominantly adiabatic the spin backscattering rate can be tuned via diabatic Landau-Zener transitions between the spin-split bands [Betthausen et al., Science 337, 324 (2012)]. This mechanism is tolerant against spin-independent scattering processes. Completely spinpolarized systems show full spin backscattering, and thus current switching. In partially spin-polarized systems a spatial sequence of Landau-Zener transition points enhances the resistance modulation via reoccupation of backscattered spin-polarized transport modes. We discuss a possible application as a spin transistor.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRANSITIONS; TRANSISTOR; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 May 2020 07:08 |
| Last Modified: | 05 May 2020 07:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17960 |
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