Conductivitylike Gilbert Damping due to Intraband Scattering in Epitaxial Iron.
Phys Rev Lett
; 124(15): 157201, 2020 Apr 17.
Article
en En
| MEDLINE
| ID: mdl-32357022
ABSTRACT
Confirming the origin of Gilbert damping by experiment has remained a challenge for many decades, even for simple ferromagnetic metals. Here, we experimentally identify Gilbert damping that increases with decreasing electronic scattering in epitaxial thin films of pure Fe. This observation of conductivitylike damping, which cannot be accounted for by classical eddy-current loss, is in excellent quantitative agreement with theoretical predictions of Gilbert damping due to intraband scattering. Our results resolve the long-standing question about a fundamental damping mechanism and offer hints for engineering low-loss magnetic metals for cryogenic spintronics and quantum devices.
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MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2020
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Article
País de afiliación:
Estados Unidos