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Magnetic and superconducting properties of FeSe₁–xTex (x≃0, 0.5, and 1.0)

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dc.contributor.author Fedorchenko, A.V.
dc.contributor.author Grechnev, G.E.
dc.contributor.author Desnenko, V.A.
dc.contributor.author Panfilov, A.S.
dc.contributor.author Gnatchenko, S.L.
dc.contributor.author Tsurkan, V.V.
dc.contributor.author Deisenhofer, J.
dc.contributor.author Krug von Nidda, H.-A.
dc.contributor.author Loidl, A.
dc.contributor.author Chareev, D.A.
dc.contributor.author Volkova, O.S.
dc.contributor.author Vasiliev, A.N.
dc.date.accessioned 2017-05-30T11:03:10Z
dc.date.available 2017-05-30T11:03:10Z
dc.date.issued 2011
dc.identifier.citation Magnetic and superconducting properties of FeSe₁–xTex (x≃0, 0.5, and 1.0) / A.V. Fedorchenko, G.E. Grechnev, V.A. Desnenko, A.S. Panfilov, S.L. Gnatchenko, V.V. Tsurkan, J. Deisenhofer, H.-A. Krug von Nidda, A. Loidl, D.A. Chareev, O.S. Volkova, A.N. Vasiliev // Физика низких температур. — 2010. — Т. 37, № 1. — С. 100–107. — Бібліогр.: 39 назв. — англ. uk_UA
dc.identifier.issn 0132-6414
dc.identifier.other PACS: 74.70.Xa, 74.20.Pq, 74.25.Ha, 75.30.Cr
dc.identifier.uri http://dspace.nbuv.gov.ua/handle/123456789/118439
dc.description.abstract Magnetization studies for FeSe₁–xTex (x≃0, 0.5, and 1.0) compounds were carried out in magnetic fields up to 50 kOe and in the temperature range 2–300 K. The superconducting transition was observed at Tc≃8 K and 13.6–14.2 K in FeSe₀.₉₆₃ and FeSe₀.₅Te₀.₅, respectively. For the most samples, a nonlinear behavior of the magnetization curves in the normal state gives evidence of a commonly observed substantial presence of ferromagnetic impurities in the compounds under study. By taking these impurity effects into account, the intrinsic magnetic susceptibility χ of FeSe₀.₉₆₃ and FeSe₀.₅Te₀.₅, and FeTe was estimated to increase gradually with Te content. For FeTe a drastic drop in χ(T) with decreasing temperature was found at TN≃70 K, which is presumably related to antiferromagnetic ordering. To shed light on the observed magnetic properties, ab initio calculations of the exchange enhanced magnetic susceptibility are performed for FeSe and FeTe within the local spin density approximation. uk_UA
dc.description.sponsorship The authors dedicate this work to the 100th anniversary of David Shoenberg, who was a pioneer of lowMagnetic and superconducting properties of FeSe₁–xTex (x≃0, 0.5, and 1.0) Fizika Nizkikh Temperatur, 2011, v. 37, No. 1 107 temperature physics and studies of electronic structure of solids This work has been supported by the Russian-Ukrainian RFBR-NASU project 43-02-10 and 10-02-90409. uk_UA
dc.language.iso en uk_UA
dc.publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України uk_UA
dc.relation.ispartof Физика низких температур
dc.subject Сверхпроводимость uk_UA
dc.title Magnetic and superconducting properties of FeSe₁–xTex (x≃0, 0.5, and 1.0) uk_UA
dc.type Article uk_UA
dc.status published earlier uk_UA


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