The Specific Heat and the Fermi Surface Anisotropy in Sr2RuO4 |
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Authors: | Yukihiro Okuno and Manfred Sigrist |
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Affiliation: | (1) Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, 606-8502, Japan |
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Abstract: | The influence of the Fermi surface anisotropy on the specific heat jump is studied for the p-wave superconductor with a gap function d = z^(k
x
± ik
y
) in connection with Sr2RuO4. It is shown that the normalized specific heat jump, C/ T
c
, is reduced from its universal value, 1.43, in accordance with experimental findings. We show that this behavior fits well into our present understanding of the quasiparticle spectrum and the impurity effects. |
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Keywords: | Sr2RuO4 specific heat jump Fermi surface anisotropy |
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