Obstbaum, M. and Decker, M. and Greitner, A. K. and Haertinger, M. and Meier, T. N. G. and Kronseder, M. and Chadova, K. and Wimmer, S. and Koedderitzsch, D. and Ebert, H. and Back, C. H. (2016) Tuning Spin Hall Angles by Alloying. PHYSICAL REVIEW LETTERS, 117 (16): 167204. ISSN 0031-9007, 1079-7114
Full text not available from this repository.Abstract
Within a combined experimental and theoretical study it is shown that the spin Hall angle of a substitutional alloy system can be continuously varied via its composition. For the alloy system AuxPt1-x a substantial increase of the maximum spin Hall angle compared to the pure alloy partners could be achieved this way. The experimental findings for the longitudinal charge conductivity sigma, the transverse spin Hall conductivity sigma(SH), and the spin Hall angle alpha(SH) could be confirmed by calculations based on Kubo's linear response formalism. Calculations of these response quantities for different temperatures show that the divergent behavior of sigma and sigma(SH) is rapidly suppressed with increasing temperature. As a consequence, sigma(SH) is dominated at higher temperatures by its intrinsic contribution that has only a rather weak temperature dependence.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TORQUES; FORMULA; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Apr 2019 09:59 |
| Last Modified: | 24 Apr 2019 09:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4098 |
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