Superconducting properties of the non-centrosymmetric Superconductors TaXSi (X= Re, Ru)

Abstract

We have investigated the ternary noncentrosymmetric superconductors TaXSi (X=Re, Ru) by magnetization, resistivity, and specific heat measurements. The samples crystallize in orthorhombic TiFeSi structure having superconducting transition Tc = 5.32 K and 3.91 K, for TaReSi and TaRuSi respectively. Specific heat measurements indicated an s-wave nature of both materials with a moderately coupled nature. However, a low value of specific heat jump and the concave nature of the upper critical field suggests a nontrivial superconducting gap.

arXiv comment8 Pages, 7 Figures

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• Evidence of fully-gapped superconductivity in NbReSi: A combined $\mu$SR and NMR study
• Superconductivity in noncentrosymmetric NbReSi investigated by muon spin rotation and relaxation
• Theoretical study of dynamical and electronic properties of noncentrosymmetric superconductor NbReSi
• Fully-gapped superconductivity and topological aspects of the noncentrosymmetric TaReSi superconductor
• Superconducting ground state study of valence skip compound AgSnSe${}_2$
• Superconductivity with high upper critical field in Ta-Hf Alloys
• Correlation stabilized ferromagnetic MnRuAs with distorted kagome lattice
• Time reversal invariant single gap superconductivity with upper critical field larger than Pauli limit in NbIr${}_2$B${}_2$
• Comment on "Fully gapped superconductivity and topological aspects of the noncentrosymmetric superconductor TaReSi"
• NbReSi: A Noncentrosymetric Superconductor with Large Upper Critical Field