Details

Autor(en) / Beteiligte

• Dehn, M H
• Shenton, J K
• Holenstein, S
• Meier, Q N
• Arseneau, D J
• Cortie, D L
• Hitti, B
• Fang, A C Y
• MacFarlane, W A
• McFadden, R M L
• Morris, G D
• Salman, Z
• Luetkens, H
• Spaldin, N A
• Fechner, M
• Kiefl, R F

Titel

Observation of a Charge-Neutral Muon-Polaron Complex in Antiferromagnetic Cr2O3

Ist Teil von

• Physical review. X, 2020-02, Vol.10 (1)

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report a comprehensive muon spin rotation (μSR) study of the prototypical magnetoelectric antiferromagnetCr2O3. We find the positively charged muon (μ+) occupies several distinct interstitial sites and displays a rich dynamic behavior involving local hopping, thermally activated site transitions, and the formation of a charge-neutral complex composed of a muon and an electron polaron. The discovery of such a complex has implications for the interpretation ofμSRspectra in a wide range of magnetic oxides and opens a route to study the dopant characteristics of interstitial hydrogen impurities in such materials. We address implications arising from implanting aμ+into a linear magnetoelectric and discuss the challenges of observing a local magnetoelectric effect generated by the charge of the muon.