Spin relaxation properties in graphene due to its linear dispersion
SCIE
SCOPUS
- Title
- Spin relaxation properties in graphene due to its linear dispersion
- Authors
- Jo, S; Ki, DK; Jeong, D; Lee, HJ; Kettemann, S
- Date Issued
- 2011-08-10
- Publisher
- AMER PHYSICAL SOC
- Abstract
- A spin injection is achieved in a direct-contact cobalt-single-layer graphene nonlocal spin-valve system, overlaid with a top gate. The spin signal is retained even in bipolar configurations of graphene. Hanle spin-precession analysis demonstrates that proportionality between spin and momentum relaxation times, which supports the Elliot-Yafet-type spin relaxation, holds consistently only when the carrier-density dependence of the density of states is taken into account. The corresponding strong spin-orbit coupling (similar to 10 meV) suggests that covalently bonded adsorbates, rather than charged impurities, govern the spin relaxation in diffusive graphene.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12260
- DOI
- 10.1103/PHYSREVB.84.075453
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 84, no. 7, 2011-08-10
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