Birkner, Bastian and Pachniowski, Daniel and Sandner, Andreas and Ostler, Markus and Seyller, Thomas and Fabian, Jaroslav and Ciorga, Mariusz and Weiss, Dieter and Eroms, Jonathan (2013) Annealing-induced magnetic moments detected by spin precession measurements in epitaxial graphene on SiC. PHYSICAL REVIEW B, 87 (8): 081405. ISSN 1098-0121,
Full text not available from this repository. (Request a copy)Abstract
We present results of nonlocal and three-terminal (3T) spin precession measurements on spin injection devices fabricated on epitaxial graphene on SiC. The measurements were performed before and after an annealing step at 150 degrees C for 15 minutes in vacuum. The values of spin relaxation length L-s and spin relaxation time tau(s) obtained after annealing are reduced by a factor 2 and 4, respectively, compared to those before annealing. An apparent discrepancy between spin diffusion constant D-s and charge diffusion constant D-c can be resolved by investigating the temperature dependence of the g factor, which is consistent with a model for paramagnetic magnetic moments. DOI: 10.1103/PhysRevB.87.081405
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ROOM-TEMPERATURE; SILICON-CARBIDE; TRANSPORT; RELAXATION; LAYERS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Apr 2020 06:52 |
| Last Modified: | 24 Apr 2020 06:52 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17150 |
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