Superconducting properties of the non-centrosymmetric Superconductors TaXSi (X= Re, Ru)
Sajilesh K. P., R. P. Singh
TL;DR
This study explores the superconducting properties of non-centrosymmetric TaXSi (X=Re, Ru) compounds, revealing their s-wave nature, moderate coupling, and indications of a nontrivial gap through various measurements.
Contribution
It provides new experimental insights into the superconducting behavior and gap structure of TaXSi compounds with non-centrosymmetric crystal structures.
Findings
Superconducting transition temperatures of 5.32 K and 3.91 K.
Evidence of s-wave superconductivity from specific heat data.
Indications of a nontrivial superconducting gap from critical field analysis.
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.
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