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29 March 2024 |
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Article overview
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Low-temperature specific heat of the heavy-fermion superconductor PrOs4Sb12 | R Vollmer
; A Faisst
; C Pfleiderer
; H V Löhneysen
; E D Bauer
; P-C Ho
; V Zapf
; M B Maple
; | Date: |
7 Feb 2003 | Journal: | Phys Rev Lett, 90 (5), 057001 | 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 combination this identifies Pr(Os4Sb12 as a strong contender for quadrupolar pairing, i.e., superconductivity that is neither electron-phonon nor magnetically mediated. | Source: | PubMed, pmid12633389 | Services: | Forum | Review | Favorites |
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