Critical Spin Fluctuation Mechanism for the Spin Hall Effect
Journal Article
·
· Physical Review Letters
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Tokyo (Japan); RIKEN Center for Emergent Matter Science (CEMS), Saitama (Japan)
Herein we propose mechanisms for the spin Hall effect in metallic systems arising from the coupling between conduction electrons and local magnetic moments that are dynamically fluctuating. Both a side-jump-type mechanism and a skew-scattering-type mechanism are considered. In either case, dynamical spin fluctuation gives rise to a nontrivial temperature dependence in the spin Hall conductivity. This leads to the enhancement in the spin Hall conductivity at nonzero temperatures near the ferromagnetic instability. The proposed mechanisms could be observed in 4$$d$$ or 5$$d$$ metallic compounds.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; Japan Science and Technology Agency (JST); Japan Society for the Promotion of Science (JSPS)
- Grant/Contract Number:
- AC05-00OR22725; JPMJCR1874; JPMJCR16F1; 18H03676; 26103006
- OSTI ID:
- 1607128
- Alternate ID(s):
- OSTI ID: 1573875
- Journal Information:
- Physical Review Letters, Vol. 123, Issue 19; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 7 works
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