Details

Autor(en) / Beteiligte

• Dehn, M H
• Shenton, J K
• Arseneau, D J
• MacFarlane, W A
• Morris, G D
• Maigné, A
• Spaldin, N A
• Kiefl, R F

Titel

Local Electronic Structure and Dynamics of Muon-Polaron Complexes in Fe2O3

Ist Teil von

• Physical review letters, 2021-01, Vol.126 (3)

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2021

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• We perform detailed muon spin rotation (μSR) measurements in the classic antiferromagnet Fe2O3 and explain the spectra by considering dynamic population and dissociation of charge-neutral muon-polaron complexes. We show that charge-neutral muon states in Fe2O3, 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 Fe2O3 suggests that isolated hydrogen (H) impurities form analogous complexes, and that H interstitials may be a source of charge carrier density in Fe2O3.