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Spatial structure of the superconducting phase in heavy-fermion systems and anomalies in the excitation spectrum

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Abstract

A degenerate superconducting phase in a metal with strong spin-orbital coupling may have a domain structure at low temperatures. The domain walls (of width ∼ξ=vF/Δ0) carry a finite density of states N(0)≈mk f/π2 per unit volume, which in turn results in the presence of a linear term γT in the electronic specific heatC e (T). With the help of the Atiyah-Singer theorem, this can be proved for a wide class of domain structures.

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Authors and Affiliations

  1. L. D. Landau Institute for Theoretical Physics, Academy of Sciences of the USSR, Moscow, USSR

    L. I. Burlachkov & N. B. Kopnin

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  1. L. I. Burlachkov
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  2. N. B. Kopnin
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Burlachkov, L.I., Kopnin, N.B. Spatial structure of the superconducting phase in heavy-fermion systems and anomalies in the excitation spectrum. J Low Temp Phys 72, 451–460 (1988). https://doi.org/10.1007/BF00682153

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  • DOI: https://doi.org/10.1007/BF00682153

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