Kochan, Denis and Gmitra, Martin and Fabian, Jaroslav (2011) Theory of the ac Spin-Valve Effect. PHYSICAL REVIEW LETTERS, 107 (17): 176604. ISSN 0031-9007,
Full text not available from this repository.Abstract
The spin-valve complex magnetoimpedance of symmetric ferromagnet-normal-metal-ferromagnet junctions is investigated within the drift-diffusion (standard) model of spin injection. The ac magnetoresistance-the real part difference of the impedances of the parallel and antiparallel magnetization configurations-exhibits an overall damped oscillatory behavior, as an interplay of the diffusion and spin relaxation times. In wide junctions the ac magnetoresistance oscillates between positive and negative values, reflecting resonant amplification and depletion of the spin accumulation, while the line shape for thin tunnel junctions is predicted to be purely Lorentzian. The ac spin-valve effect could be a technique to extract spin transport and spin relaxation parameters in the absence of a magnetic field and for a fixed sample size.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | METAL INTERFACE; INJECTION; MAGNETORESISTANCE; CHARGE; ACCUMULATION; SPINTRONICS; RESONANCE; TRANSPORT; JUNCTION; GOLD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Jun 2020 05:04 |
| Last Modified: | 02 Jun 2020 05:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19959 |
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