| Autor: |
M H, Dehn, J K, Shenton, D J, Arseneau, W A, MacFarlane, G D, Morris, A, Maigné, N A, Spaldin, R F, Kiefl |
| Rok vydání: |
2020 |
| Zdroj: |
Physical review letters. 126(3) |
| ISSN: |
1079-7114 |
| Popis: |
We perform detailed muon spin rotation (μSR) measurements in the classic antiferromagnet Fe_{2}O_{3} and explain the spectra by considering dynamic population and dissociation of charge-neutral muon-polaron complexes. We show that charge-neutral muon states in Fe_{2}O_{3}, despite lacking the signatures typical of charge-neutral muonium centers in nonmagnetic materials, have a significant impact on the measured μSR frequencies and relaxation rates. Our identification of such polaronic muon centers in Fe_{2}O_{3} suggests that isolated hydrogen (H) impurities form analogous complexes, and that H interstitials may be a source of charge carrier density in Fe_{2}O_{3}. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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