Journal
PHYSICAL REVIEW B
Volume 96, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.96.014507
Keywords
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Funding
- AFOSR-MURI
- FAPESP [2014/25241-3]
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The recently discovered noncentrosymmetric superconductor ThCoC2 was observed to show unusual superconducting behavior with a critical temperature of T-c = 2.65 K. Here we investigate the effect of nickel substitution on the superconducting state in ThCo1-x NixC2. Magnetization, resistivity, and heat capacity measurements demonstrate Ni substitution has a dramatic effect with critical temperature increased up to T-c = 12.1 K for x = 0.4 Ni concentration, which is a rather high transition temperature for a noncentrosymmetric superconductor. In addition, the unusual superconducting characteristics observed in pure ThCoC2 appear to be suppressed or tuned with Ni substitution towards a more conventional fully gapped superconductor.
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