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Magnetic nesting and coexistence of ferromagnetism and superconductivity

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Abstract

If the condition εσ(p)=ε−σ(−p+n I/v F) for magnetic nesting is fulfilled for the electron dispersion law with spin σ along a certain preferential direction n, ferromagnetism and the inhomogeneous superconducting state can coexist up to a very high magnetization I. This fact was used to explain the coexistence of ferromagnetism and superconductivity for layered cuprates of the RuSr2GdCu2O8 type, which possess a finite, though rather high, critical magnetization, because the conditions for magnetic nesting are fulfilled only approximately.

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Authors and Affiliations

  1. Moscow Institute of Engineering Physics (State University), Kashirskoe sh. 31, Moscow, 115409, Russia

    V. F. Elesin

  2. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia

    V. V. Kapaev & Yu. V. Kopaev

Authors
  1. V. F. Elesin
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  2. V. V. Kapaev
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  3. Yu. V. Kopaev
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Translated from Pis’ma v Zhurnal Éksperimental’no\({{P_{As_4 } } \mathord{\left/ {\vphantom {{P_{As_4 } } {P_{Ga} }}} \right. \kern-\nulldelimiterspace} {P_{Ga} }} = \gamma \) i Teoretichesko\({{P_{As_4 } } \mathord{\left/ {\vphantom {{P_{As_4 } } {P_{Ga} }}} \right. \kern-\nulldelimiterspace} {P_{Ga} }} = \gamma \) Fiziki, Vol. 79, No. 9, 2004, pp. 544–549.

Original Russian Text Copyright © 2004 by Elesin, Kapaev, Kopaev.

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Elesin, V.F., Kapaev, V.V. & Kopaev, Y.V. Magnetic nesting and coexistence of ferromagnetism and superconductivity. Jetp Lett. 79, 436–440 (2004). https://doi.org/10.1134/1.1776239

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  • DOI: https://doi.org/10.1134/1.1776239

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