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Orbital Hanle Magnetoresistance in a 3d Transition Metal.
- Source :
-
Physical review letters [Phys Rev Lett] 2023 Oct 13; Vol. 131 (15), pp. 156703. - Publication Year :
- 2023
-
Abstract
- The Hanle magnetoresistance is a telltale signature of spin precession in nonmagnetic conductors, in which strong spin-orbit coupling generates edge spin accumulation via the spin Hall effect. Here, we report the existence of a large Hanle magnetoresistance in single layers of Mn with weak spin-orbit coupling, which we attribute to the orbital Hall effect. The simultaneous observation of a sizable Hanle magnetoresistance and vanishing small spin Hall magnetoresistance in BiYIG/Mn bilayers corroborates the orbital origin of both effects. We estimate an orbital Hall angle of 0.016, an orbital relaxation time of 2 ps and diffusion length of the order of 2 nm in disordered Mn. Our findings indicate that current-induced orbital moments are responsible for magnetoresistance effects comparable to or even larger than those determined by spin moments, and provide a tool to investigate nonequilibrium orbital transport phenomena.
Details
- Language :
- English
- ISSN :
- 1079-7114
- Volume :
- 131
- Issue :
- 15
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 37897743
- Full Text :
- https://doi.org/10.1103/PhysRevLett.131.156703