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Spatial trends of noncollinear exchange coupling mediated by itinerant carriers with different Fermi surfaces

Lai, Hsin-Hua and Huang, Wen-Min and Lin, Hsiu-Hau (2009) Spatial trends of noncollinear exchange coupling mediated by itinerant carriers with different Fermi surfaces. Physical Review B, 79 (4). Art. No. 045315. ISSN 1098-0121. doi:10.1103/PhysRevB.79.045315. https://resolver.caltech.edu/CaltechAUTHORS:LAIprb09

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevB.79.045315DOIArticle
http://link.aps.org/doi/10.1103/PhysRevB.79.045315PublisherArticle
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.
Funders:
Funding AgencyGrant Number
National Science Council (Taipei)NSC-96-2112-M-007-004
National Science Council (Taipei)NSC-97-2112-M-007-022-MY3
National Center for Theoretical Sciences (Taipei)UNSPECIFIED
Subject Keywords:band model of magnetism, Fermi surface, RKKY interaction, spin-orbit interactions
Issue or Number:4
DOI:10.1103/PhysRevB.79.045315
Record Number:CaltechAUTHORS:LAIprb09
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:LAIprb09
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13165
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:30 Jan 2009 23:56
Last Modified:08 Nov 2021 22:35

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