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

Dehn, M. H., Shenton, J., Holenstein, S., Meier, Q., Arseneau, D., Cortie, D., et al. (2020). Observation of a Charge-Neutral Muon-Polaron Complex in Antiferromagnetic Cr2O3. Physical Review X, 10(1): 011036. doi:10.1103/PhysRevX.10.011036.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-C1F3-E Version Permalink: https://hdl.handle.net/21.11116/0000-000B-AE77-C
Genre: Journal Article

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 Creators:
Dehn, M. H.1, 2, 3, Author
Shenton, J. K.4, Author
Holenstein, S.5, 6, Author
Meier, Q. N.4, Author
Arseneau, D. J.3, Author
Cortie, D. L.1, 2, 7, Author
Hitti, B.3, Author
Fang, A. C. Y.1, Author
MacFarlane, W. A.2, 3, 7, Author
McFadden, R. M. L.2, 7, Author
Morris, G. D.3, Author
Salman, Z.6, Author
Luetkens, H.6, Author
Spaldin, N. A.4, Author
Fechner, M.4, 8, Author           
Kiefl, R. F.1, 2, 3, Author
Affiliations:
1Department of Physics and Astronomy, University of British Columbia, Vancouver, ou_persistent22              
2Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, ou_persistent22              
3TRIUMF, Vancouver, ou_persistent22              
4Department of Materials, ETH Zurich, ou_persistent22              
5Physik-Institut der Universität Zürich, ou_persistent22              
6Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, ou_persistent22              
7Department of Chemistry, University of British Columbia, Vancouver, ou_persistent22              
8Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              

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 Abstract: We report a comprehensive muon spin rotation (μSR) study of the prototypical magnetoelectric antiferromagnet Cr2O3. 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 of μSR spectra 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 a μ+ into a linear magnetoelectric and discuss the challenges of observing a local magnetoelectric effect generated by the charge of the muon.

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Language(s): eng - English
 Dates: 2019-11-062019-09-012019-11-262020-02-14
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevX.10.011036
 Degree: -

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Grant ID : 810451
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)
Project name : M. H. D. acknowledges support from a Stewart Blusson Quantum Matter Institute (SBQMI) QuEST Fellowship and would like to thank A. Nojeh and I. Elfimov for stimulating discussions. A Natural Sciences and Engineering Research Council (NSERC) Discovery grant to R. F. K. provided financial support. J. K. S. and N. A. S. acknowledge funding from the European Research Council under the European Union’s Horizon 2020 research and innovation program Grant Agreement No. 810451. Computational resources were provided by ETH Zürich and the Swiss National Supercomputing Centre, Project ID No. s889. S. H. acknowledges financial support by the Swiss National Science Foundation (SNF-Grant No. 200021-159736).
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Title: Physical Review X
  Abbreviation : Phys. Rev. X
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 10 (1) Sequence Number: 011036 Start / End Page: - Identifier: Other: 2160-3308
CoNE: https://pure.mpg.de/cone/journals/resource/2160-3308