Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field

Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field

Andreev reflection in contacts based on a magnetic superconductorMo3Sb7in magnetic field has been investigated by the point-contact method. It is found that the behavior of the order parameter in the magnetic field Δ(H) is essentially dependent on the value of Δ, which varies widely (Δ(0,0) ≈ 0.01-0...

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Date:2007
Main Authors: Dmitriev, V.M., Rybaltchenko, L.F., Ishchenko, L.A., Khristenko, E.V., Bukowski, Z., Troć, R.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2007
Subjects:
Сверхпроводимость, в том числе высокотемпературная
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/7764
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field / V.M. Dmitriev, L.F. Rybaltchenko, L.A. Ishchenko, E.V. Khristenko, Z. Bukowski, R. Troć // Физика низких температур. — 2007. — Т. 33, № 12. — С. 1331-1337. — Бібліогр.: 24 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
id nasplib_isofts_kiev_ua-123456789-7764
record_format dspace
spelling Dmitriev, V.M.
Rybaltchenko, L.F.
Ishchenko, L.A.
Khristenko, E.V.
Bukowski, Z.
Troć, R.
2010-04-12T13:04:14Z
2010-04-12T13:04:14Z
2007
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field / V.M. Dmitriev, L.F. Rybaltchenko, L.A. Ishchenko, E.V. Khristenko, Z. Bukowski, R. Troć // Физика низких температур. — 2007. — Т. 33, № 12. — С. 1331-1337. — Бібліогр.: 24 назв. — англ.
0132-6414
https://nasplib.isofts.kiev.ua/handle/123456789/7764
Andreev reflection in contacts based on a magnetic superconductorMo3Sb7in magnetic field has been investigated by the point-contact method. It is found that the behavior of the order parameter in the magnetic field Δ(H) is essentially dependent on the value of Δ, which varies widely (Δ(0,0) ≈ 0.01-0.31meV) for different contacts at practically invariant Tc. At high the dependence max(H)deviates slightly from the theoretical prediction applicable under the point-contact conditions. As the order parameter decreases, the deviation starts to increase and becomes very large when Δ approaches its minimum. Proceeding from the results obtained in this study and from the temperature measurements on Mo3Sb7performed formerly, we are inclined as before to assign the compound to the class of superconductors with anisotropic gap function. So, in no way can it be considered as conventional BCS-type superconductor. The upper critical field Hc2 ≈16.5 kOe found here is close to that obtained from magnetization measurements in another study. According to the estimation performed, the pair-breaking effect of the Pauli paramagnetism is rather weak in Mo3Sb7.
en
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Сверхпроводимость, в том числе высокотемпературная
Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
Article
published earlier
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
title Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
spellingShingle Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
Dmitriev, V.M.
Rybaltchenko, L.F.
Ishchenko, L.A.
Khristenko, E.V.
Bukowski, Z.
Troć, R.
Сверхпроводимость, в том числе высокотемпературная
title_short Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
title_full Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
title_fullStr Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
title_full_unstemmed Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field
title_sort andreev reflection study of a new magnetic superconductor mo3sb7 in magnetic field
author Dmitriev, V.M.
Rybaltchenko, L.F.
Ishchenko, L.A.
Khristenko, E.V.
Bukowski, Z.
Troć, R.
author_facet Dmitriev, V.M.
Rybaltchenko, L.F.
Ishchenko, L.A.
Khristenko, E.V.
Bukowski, Z.
Troć, R.
topic Сверхпроводимость, в том числе высокотемпературная
topic_facet Сверхпроводимость, в том числе высокотемпературная
publishDate 2007
language English
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
format Article
description Andreev reflection in contacts based on a magnetic superconductorMo3Sb7in magnetic field has been investigated by the point-contact method. It is found that the behavior of the order parameter in the magnetic field Δ(H) is essentially dependent on the value of Δ, which varies widely (Δ(0,0) ≈ 0.01-0.31meV) for different contacts at practically invariant Tc. At high the dependence max(H)deviates slightly from the theoretical prediction applicable under the point-contact conditions. As the order parameter decreases, the deviation starts to increase and becomes very large when Δ approaches its minimum. Proceeding from the results obtained in this study and from the temperature measurements on Mo3Sb7performed formerly, we are inclined as before to assign the compound to the class of superconductors with anisotropic gap function. So, in no way can it be considered as conventional BCS-type superconductor. The upper critical field Hc2 ≈16.5 kOe found here is close to that obtained from magnetization measurements in another study. According to the estimation performed, the pair-breaking effect of the Pauli paramagnetism is rather weak in Mo3Sb7.
issn 0132-6414
url https://nasplib.isofts.kiev.ua/handle/123456789/7764
citation_txt Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field / V.M. Dmitriev, L.F. Rybaltchenko, L.A. Ishchenko, E.V. Khristenko, Z. Bukowski, R. Troć // Физика низких температур. — 2007. — Т. 33, № 12. — С. 1331-1337. — Бібліогр.: 24 назв. — англ.
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AT khristenkoev andreevreflectionstudyofanewmagneticsuperconductormo3sb7inmagneticfield
AT bukowskiz andreevreflectionstudyofanewmagneticsuperconductormo3sb7inmagneticfield
AT trocr andreevreflectionstudyofanewmagneticsuperconductormo3sb7inmagneticfield
first_indexed 2025-11-24T16:16:16Z
last_indexed 2025-11-24T16:16:16Z
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