Andreev reflection at point contacts with heavy-fermion UBe13 ?

K. Gloos

doi:10.1103/physrevlett.85.5257

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Andreev reflection at point contacts with heavy-fermion UBe13 ?

K. Gloos

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Abstract

We comment on a recent Letter by Waelti et al. (PRL 84, 5616 (2000)) on 'Spectroscopic evidence for unconventional superconductivity in UBe13'. We show - by using the basic Wexler formula - that it is unlikely to observe Andreev reflection at point contacts between UBe13 and a normal metal. The large superconducting anomalies usually found for those contacts are mainly due to the resistive Maxwell resistance vanishing below Tc of UBe13.

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K. Gloos. 2000-07-01. Andreev reflection at point contacts with heavy-fermion UBe13 ?. https://doi.org/10.1103/physrevlett.85.5257

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