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  Optical determination of the Néel vector in a CuMnAs thin-film antiferromagnet

Saidl, V., Nemec, P., Wadley, P., Hills, V., Campion, R. P., Novak, V., et al. (2017). Optical determination of the Néel vector in a CuMnAs thin-film antiferromagnet. Nature Photonics, 11(2), 91-96. doi:10.1038/NPHOTON.2016.255.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-E03C-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-1E32-6
Genre: Journal Article

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 Creators:
Saidl, V.1, Author
Nemec, P.1, Author
Wadley, P.1, Author
Hills, V.1, Author
Campion, R. P.1, Author
Novak, V.1, Author
Edmonds, K. W.1, Author
Maccherozzi, F.1, Author
Dhesi, S. S.1, Author
Gallagher, B. L.1, Author
Trojanek, F.1, Author
Kunes, J.1, Author
Zelezny, J.2, Author              
Maly, P.1, Author
Jungwirth, T.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: Recent breakthroughs in the electrical detection and manipulation of antiferromagnets have opened a new avenue in the research of non-volatile spintronic devices(1-10). Antiparallel spin sublattices in antiferromagnets, producing zero dipolar fields, lead to insensitivity to magnetic field perturbations, multi-level stability, ultrafast spin dynamics and other favourable characteristics, and may find utility in fields ranging from magnetic memories to optical signal processing. However, the absence of a net magnetic moment and ultrashort magnetization dynamics timescales make antiferromagnets notoriously difficult to study using common magnetometers or magnetic resonance techniques. Here, we demonstrate the experimental determination of the Neel vector in a thin film of antiferromagnetic CuMnAs (refs 9,10), a prominent material used in the first realization of antiferromagnetic memory chips(10). We use a table-top femtosecond pump probe magneto-optical experiment that is considerably more accessible than the traditionally employed large-scale-facility techniques such as neutron diffraction(11) and X-ray magnetic dichroism measurements(12-16).

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Language(s): eng - English
 Dates: 2017-01-092017-01-09
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: ISI: 000393731000011
DOI: 10.1038/NPHOTON.2016.255
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Title: Nature Photonics
Source Genre: Journal
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Pages: - Volume / Issue: 11 (2) Sequence Number: - Start / End Page: 91 - 96 Identifier: ISSN: 1749-4885
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000240270