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Analysis of the interrelation between magnetic and superconducting subsystems of RE(Rh1 − x Ru x )4B4 compounds by the examples of compounds DyRh3.8Ru0.2B4 and HoRh3.8Ru0.2B4

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Abstract

The complex way and the importance of solving the problem of coexistence of cooperative magnetism and superconductivity are emphasized by the example of a large group of borides of rare-earth and platinum metals with the general formula RE(Rh1 − x Ru x )4B4 and cluster structure of the LuRu4B4 type. To analyze the influence of the magnetic subsystem on B c2(T), the Werthamer, Gelfand, and Hohenberg (WGH) theory is used, based on which, calculated dependences χ(T), which agree with the experimental results, are found. It is shown that by purposefully varying the magnetic subsystem a superconducting one can be formed and the dependence B c2(T) required for it can obtained. Such approach is also recommended for strong-field superconductors—complex arsenides of iron and lanthanum with fluorine additives.

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991, Russia

    G. S. Burkhanov & S. A. Lachenkov

  2. Vereshchagin Institute for High-Pressure Physics, Russian Academy of Sciences, Kaluzhskoe sh. 14, Troitsk, Moscow oblast, 142190, Russia

    E. P. Khlybov

  3. International Laboratory of High Magnetic Fields and Low Temperatures, Polish Academy of Sciences, ul. Gajowicka 95, 53-421, Wrocław, Poland

    G. S. Burkhanov & E. P. Khlybov

Authors
  1. G. S. Burkhanov
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  2. S. A. Lachenkov
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  3. E. P. Khlybov
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Correspondence to S. A. Lachenkov.

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Original Russian Text © G.S. Burkhanov, S.A. Lachenkov, E. P. Khlybov, 2015, published in Doklady Akademii Nauk, 2015, Vol. 460, No. 4, pp. 398–402.

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Burkhanov, G.S., Lachenkov, S.A. & Khlybov, E.P. Analysis of the interrelation between magnetic and superconducting subsystems of RE(Rh1 − x Ru x )4B4 compounds by the examples of compounds DyRh3.8Ru0.2B4 and HoRh3.8Ru0.2B4 . Dokl. Phys. 60, 62–66 (2015). https://doi.org/10.1134/S1028335815020019

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  • DOI: https://doi.org/10.1134/S1028335815020019

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