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Title: Superconductivity in pressurized CeRhG e 3 and related noncentrosymmetric compounds

Journal Article · · Physical Review B

Here, we report the discovery of superconductivity in pressurized CeRhGe3, a nonsuperconducting member of the isostructural family of noncentrosymmetric heavy-fermion compounds CeTX3(T = Co, Rh, Ir and X=Si, Ge). Superconductivity appears in CeRhGe3 at a pressure of 19.6 GPa and the transition temperature TC reaches a maximum value of 1.3 K at 21.5 GPa. This finding provides an opportunity to establish systematic correlations between superconductivity and material properties within this family. Though ambient-pressure unit-cell volumes and critical pressures for superconductivity vary substantially across the series, all family members reach a maximum TmaxC at a common (±1.7%) critical cell volume Vcrit, and TmaxC at Vcrit increases with increasing spin-orbit coupling strength of the d electrons. These correlations show that substantial Kondo and spin-orbit couplings favor superconductivity in this family, the latter reflecting the role of broken centrosymmetry.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1467208
Alternate ID(s):
OSTI ID: 1421885
Report Number(s):
LA-UR-17-27472; PRBMDO
Journal Information:
Physical Review B, Vol. 97, Issue 6; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (1)

Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric ThCoC 2 journal April 2019

Figures / Tables (7)