Published January 15, 2009
| Published
Journal Article
Open
Spatial trends of noncollinear exchange coupling mediated by itinerant carriers with different Fermi surfaces
- Creators
- Lai, Hsin-Hua
- Huang, Wen-Min
- Lin, Hsiu-Hau
Abstract
We study the exchange coupling mediated by itinerant carriers with spin-orbit interaction by both analytic and numeric approaches. The mediated exchange coupling is noncollinear and its spatial trends depend on the Fermi-surface topology of the itinerant carriers. Taking Rashba interaction as an example, the exchange coupling is similar to the conventional Ruderman-Kittel-Kasuya-Yosida type in weak coupling. On the other hand, in the strong coupling, the spiral interaction dominates. In addition, inclusion of finite spin relaxation always makes the noncollinear spiral exchange interaction dominant. Potential applications of our findings are explained and discussed.
Additional Information
© 2009 The American Physical Society. Received 6 August 2008; revised 14 November 2008; published 26 January 2009. We acknowledge support from the National Science Council of Taiwan through Grants No. NSC-96-2112-M-007-004 and No. NSC-97-2112-M-007-022-MY3 and also support from the National Center for Theoretical Sciences in Taiwan.Attached Files
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Additional details
- Eprint ID
- 13165
- Resolver ID
- CaltechAUTHORS:LAIprb09
- NSC-96-2112-M-007-004
- National Science Council (Taipei)
- NSC-97-2112-M-007-022-MY3
- National Science Council (Taipei)
- National Center for Theoretical Sciences (Taipei)
- Created
-
2009-01-30Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field