Critical magnetic fields and specific heats of heavy fermion superconductors

Rauchschwalbe, U.; Ahlheim, U.; Bredl, C. D.; Mayer, H. M.; Steglich, F.

doi:10.1016/0304-8853(87)90633-0

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Critical magnetic fields and specific heats of heavy fermion superconductors

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Rauchschwalbe, U., Ahlheim, U., Bredl, C. D., Mayer, H. M., & Steglich, F. (1987). Critical magnetic fields and specific heats of heavy fermion superconductors. Journal of Magnetism and Magnetic Materials, 63-4, 447-454. doi:10.1016/0304-8853(87)90633-0.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-CF76-4

Abstract

The present status concerning lower and upper critical magnetic fields, Bc1(T) and Bc2(T), and specific heats, Cs(T), of heavy-fermion superconductors is reviewed. For CeCu2Si2, the data near Tc are found to be in full accord with GL theory. Yet, a surprising enhancement of the elastic mean free path over that in the normal state is inferred. Structure in both Bc1(T) and Bc2(T) of UBe13 appears related to a bump in the normal-state specific heat (B = 0) around T = 0.5 This may be a precursor to the lower of the two calorimetric transitions inU0.97Th0.03Be13 which are confirmed by new Bc1(T)… results.