Abstract
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 4d or 5d metallic compounds.
| Original language | English |
|---|---|
| Article number | 196603 |
| Journal | Physical Review Letters |
| Volume | 123 |
| Issue number | 19 |
| DOIs | |
| State | Published - Nov 6 2019 |
Funding
The research by S. O. and T. E. was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. N. N. was supported by JST CREST Grant No. JPMJCR1874 and JPMJCR16F1, Japan, and JSPS KAKENHI Grants No. 18H03676 and No. 26103006.
| Funders | Funder number |
|---|---|
| JST CREST | JPMJCR1874, JPMJCR16F1 |
| U.S. Department of Energy | |
| Office of Science | |
| Basic Energy Sciences | |
| Division of Materials Sciences and Engineering | |
| Japan Society for the Promotion of Science | 26103006, 18H03676 |