Current-induced spin polarization and spin-orbit torque in graphene
Authors:
- Anna Dyrdał,
- Józef Barnaś
Abstract
Using the Green-function formalism, we calculate a current-induced spin polarization of weakly magnetized graphene with Rashba spin-orbit interaction. In a general case, all components of the current-induced spin polarization are nonzero, contrary to the nonmagnetic limit, where the only nonvanishing component of spin polarization is that in the graphene plane and normal to the electric field. When the induced spin polarization is exchange coupled to the magnetization, it exerts a spin-orbit torque on the latter. Using the Green-function method, we have derived some analytical formulas for the spin polarization and also determined the corresponding spin-orbit torque components. The analytical results are compared with those obtained numerically. Vertex corrections due to scattering on randomly distributed impurities are also calculated and shown to enhance the spin polarization calculated in the bare bubble approximation.
- Record ID
- UAMae9cb9cf53714c56b189e19aae0bd731
- Author
- Journal series
- Physical Review B, ISSN 1098-0121
- Issue year
- 2015
- Vol
- 92
- ASJC Classification
- ;
- DOI
- DOI:10.1103/PhysRevB.92.165404 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 35
- Score source
- journalList
- Score
- Publication indicators
- = 20; = 23; = 27; : 2015 = 1.130; : 2014 (2 years) = 3.736 - 2014 (5 years) =3.583
- Citation count
- 29
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAMae9cb9cf53714c56b189e19aae0bd731/
- URN
urn:amu-prod:UAMae9cb9cf53714c56b189e19aae0bd731
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.