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Pressure-induced electronic phase separation of magnetism and superconductivity in CrAs

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dc.contributor.author Khasanov R.
dc.contributor.author Guguchia Z.
dc.contributor.author Eremin I.
dc.contributor.author Luetkens H.
dc.contributor.author Amato A.
dc.contributor.author Biswas P.
dc.contributor.author Rüegg C.
dc.contributor.author Susner M.
dc.contributor.author Sefat A.
dc.contributor.author Zhigadlo N.
dc.contributor.author Morenzoni E.
dc.date.accessioned 2018-09-18T20:36:45Z
dc.date.available 2018-09-18T20:36:45Z
dc.date.issued 2015
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/141686
dc.description.abstract © 2015, NPG. All rights reserved. The recent discovery of pressure (p) induced superconductivity in the binary helimagnet CrAs has raised questions on how superconductivity emerges from the magnetic state and on the mechanism of the superconducting pairing. In the present work the suppression of magnetism and the occurrence of superconductivity in CrAs were studied by means of muon spin rotation. The magnetism remains bulk up to p≃3.5 kbar while its volume fraction gradually decreases with increasing pressure until it vanishes at p≃7 kbar. At 3.5 kbar superconductivity abruptly appears with its maximum T<inf>c</inf>≃1.2 K which decreases upon increasing the pressure. In the intermediate pressure region (3.5≲p≲7 kbar) the superconducting and the magnetic volume fractions are spatially phase separated and compete for phase volume. Our results indicate that the less conductive magnetic phase provides additional carriers (doping) to the superconducting parts of the CrAs sample thus leading to an increase of the transition temperature (T<inf>c</inf>) and of the superfluid density (ρ<inf>s</inf>). A scaling of ρ<inf>s</inf> with T<inf>c</inf><sup>3.2</sup> as well as the phase separation between magnetism and superconductivity point to a conventional mechanism of the Cooper-pairing in CrAs.
dc.title Pressure-induced electronic phase separation of magnetism and superconductivity in CrAs
dc.type Article
dc.relation.ispartofseries-volume 5
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS-2015-5-SID84941135084


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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