Document type:
Zeitschriftenaufsatz
Author(s):
Vollmer, R.; Fai\ss{}t, A.; Pfleiderer, C.; {v. L̈ohneysen}, H.; Bauer, E. D.; Ho, P.-C.; Zapf, V.; Maple, M. B.
Title:
Low-{{Temperature Specific Heat}} of the {{Heavy}}-{{Fermion Superconductor}} $\mathrm{Pr}﻿\mathrm{O}{\mathrm{s}}_{\mathrm{4}}\mathrm{S}{\mathrm{b}}_{\mathrm{12}}$
Abstract:
We report the magnetic field dependence of the specific-heat C of single crystals of the first Pr-based heavy-fermion superconductor Pr Os4Sb12. The variation of C at low temperature and the magnetic phase diagram inferred from C, the resistivity and magnetization provide compelling evidence of a doublet ground state. Two distinct superconducting anomalies in C indicate an unconventional superconducting state, where the splitting may arise from a weak lifting of the ground state degeneracy. In c...    »

Journal title:
Physical Review Letters
Year:
2003
Journal volume:
90
Month:
feb
Journal issue:
Pages contribution:
057001
Fulltext / DOI: