Orbital chirality and Rashba interaction in magnetic bands
SCIE
SCOPUS
- Title
- Orbital chirality and Rashba interaction in magnetic bands
- Authors
- Park, JH; Kim, CH; Lee, HW; Han, JH
- Date Issued
- 2013-01-03
- Publisher
- AMER PHYSICAL SOC
- Abstract
- The phenomenon of Rashba spin-orbit coupling is examined theoretically for an ultrathin magnetic layer in contact with a nonmagnetic heavy-metal layer. From a first-principles calculation, a large Rashba parameter of order 1 eV angstrom is obtained, which makes the Rashba interaction a powerful tool for enhancing the spin-transfer torque. Interestingly, the magnitude and sign of the parameter vary from energy band to energy band, which we attribute to band-specific chiral ordering of the orbital angular momentum. We argue that the band dependence of the Rashba parameter provides a natural explanation for a host of recent experiments and may enhance the potential for device application of the Rashba-active magnetic layer. DOI: 10.1103/PhysRevB.87.041301
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12302
- DOI
- 10.1103/PHYSREVB.87.041301
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 87, no. 4, page. 41301, 2013-01-03
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