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Broken Time-Reversal Symmetry in Superconducting Partially Filled Skutterudite Pr1−δ Pt4Ge12 *.
- Source :
-
Chinese Physics Letters . Oct2019, Vol. 36 Issue 10, p1-1. 1p. - Publication Year :
- 2019
-
Abstract
- Time reversal symmetry (TRS) is a key symmetry for classification of unconventional superconductors, and the violation of TRS often results in a wealth of novel properties. Here we report the synthesis and superconducting properties of the partially filled skutterudite Pr1 − δPt4Ge12. The results from x-ray diffraction and magnetization measurements show that the [Pt4Ge12] cage-forming structure survives and bulk superconductivity is preserved below the superconducting transition temperature Tc = 7.80 K. The temperature dependence of both the upper critical field and the electronic specific heat can be described in terms of a two-gap model, providing strong evidence of multi-band superconductivity. TRS breaking is observed using zero field muon-spin relaxation experiments, and the magnitude of the spontaneous field is nearly half of that in PrPt4Ge12. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0256307X
- Volume :
- 36
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Chinese Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 139134335
- Full Text :
- https://doi.org/10.1088/0256-307X/36/10/107402