Conductivity-Like Gilbert Damping due to Intraband Scattering in Epitaxial Iron
Materials Science
2020-04-22 v2
Abstract
Confirming the origin of Gilbert damping by experiment has remained a challenge for many decades, even for simple ferromagnetic metals. In this Letter, we experimentally identify Gilbert damping that increases with decreasing electronic scattering in epitaxial thin films of pure Fe. This observation of conductivity-like 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 longstanding question about a fundamental damping mechanism and offer hints for engineering low-loss magnetic metals for cryogenic spintronics and quantum devices.
Keywords
Cite
@article{arxiv.1906.10326,
title = {Conductivity-Like Gilbert Damping due to Intraband Scattering in Epitaxial Iron},
author = {Behrouz Khodadadi and Anish Rai and Arjun Sapkota and Abhishek Srivastava and Bhuwan Nepal and Youngmin Lim and David A. Smith and Claudia Mewes and Sujan Budhathoki and Adam J. Hauser and Min Gao and Jie-Fang Li and Dwight D. Viehland and Zijian Jiang and Jean J. Heremans and Prasanna V. Balachandran and Tim Mewes and Satoru Emori},
journal= {arXiv preprint arXiv:1906.10326},
year = {2020}
}