Local Electronic Structure and Dynamics of Muon-Polaron Complexes in
- 19 January 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 126 (3), 037202
- https://doi.org/10.1103/physrevlett.126.037202
Abstract
We perform detailed muon spin rotation () measurements in the classic antiferromagnet and explain the spectra by considering dynamic population and dissociation of charge-neutral muon-polaron complexes. We show that charge-neutral muon states in , despite lacking the signatures typical of charge-neutral muonium centers in nonmagnetic materials, have a significant impact on the measured frequencies and relaxation rates. Our identification of such polaronic muon centers in suggests that isolated hydrogen (H) impurities form analogous complexes, and that H interstitials may be a source of charge carrier density in .
Funding Information
- Natural Sciences and Engineering Research Council of Canada
- Horizon 2020 Framework Programme (810451)
- Eidgenössische Technische Hochschule Zürich
- SBQMI QuEST Fellowship
- Swiss National Supercomputing Centre (s889, eth3)
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