Nodeless superconductivity in the noncentrosymmetric compound ThIrSi
D. Tay, T. Shang, Priscila F. S. Rosa, F. B. Santos, J. D. Thompson, Z. Fisk, H.-R. Ott, T. Shiroka
DOI 10.1103/PhysRevB.107.064507 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The superconductor ThIrSi, with Tc=6.5K, is expected to show unusual features in view of its noncentrosymmetric structure and the presence of heavy elements featuring a sizable spin-orbit coupling. Here, we report a comprehensive study of its electronic properties by means of magnetization, muon-spin rotation and relaxation (μSR) and nuclear magnetic resonance (NMR) measurements. Both the superfluid density ρsc(T) (determined via transverse-field μSR) and the spin-lattice relaxation rate T1−1(T) (determined via NMR) suggest a nodeless superconductivity. Furthermore, the absence of spontaneous magnetic fields below Tc, as evinced from zero-field μSR measurements, indicates a preserved time-reversal symmetry in the superconducting state of ThIrSi. Temperature-dependent upper critical fields as well as field-dependent superconducting muon-spin relaxations suggest the presence of multiple superconducting gaps in ThIrSi.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| ThIrSi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.5 | Pressure not reported | unknown |
| ThIrSi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.4 | Pressure not reported | onset |
| ThIrSi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.4 | Pressure not reported | onset |
Similar papers
Superconductivity of Ternary Silicide with the AlB2-Type Structure Sr(Ga0.37,Si0.63)2
similarity 0.91Motoharu Imai et al.
Source status unknown — claims are unverified
Physical properties of noncentrosymmetric superconductor LaIrSi3: A μSR study
similarity 0.91V. K. Anand et al.
Source status unknown — claims are unverified
Noncentrosymmetric superconductor BaRhSi2
similarity 0.90Masaaki Isobe et al.
Source status unknown — claims are unverified
Nodeless superconductivity in the noncentrosymmetric ThIrSi compound
similarity 0.90D. Tay et al. · 2023 · arXiv:2302.08075
Source status unknown — claims are unverified
Evidence for nonunitary triplet-pairing superconductivity in noncentrosymmetric TaRuSi and comparison with isostructural TaReSi
similarity 0.90S. Sharma et al.
Source status unknown — claims are unverified
Probing the superconducting ground state of the noncentrosymmetric superconductors CaTSi3 (T = Ir, Pt) using muon-spin relaxation and rotation
similarity 0.90R. P. Singh et al.
Source status unknown — claims are unverified