Superconducting and magnetic properties of Sr3Ir4Sn13

Abstract

Magnetization and muon spin relaxation or rotation (muSR) measurements have been performed to study the superconducting and magnetic properties of Sr3Ir4Sn13. From magnetization measurements the lower and upper critical fields of Sr3Ir4Sn13 are found to be 81(1) Oe and 14.4(2) kOe, respectively. Zero-field muSR data show no sign of any magnetic ordering or weak magnetism in Sr3Ir4Sn13. Transverse-field muSR measurements in the vortex state provided the temperature dependence of the magnetic penetration depth. The dependence of penetration depth with temperature is consistent with the existence of single s-wave energy gap in the superconducting state of Sr3Ir4Sn13 with a gap value of 0.82(2) meV at absolute zero temperature. The magnetic penetration depth at zero temperature is 291(3) nm. The gap to Tc ratio is 2.1(1), indicates that Sr3Ir4Sn13 should be considered as a strong-coupling superconductor.

arXiv comment6 pages, 5 figures

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• Properties of the Ideal Ginzburg-Landau Vortex Lattice
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• Comparison of different methods for analyzing $\mu$SR line shapes in the vortex state of type-II superconductors
• Ca${}_3$Ir${}_4$Sn${}_{13}$: A weakly correlated nodeless superconductor
• Nodeless superconductivity in Ca3Ir4Sn13: evidence from quasiparticle heat transport
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Cited by in corpus (16)

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• Crystal structure and phonon softening in Ca3Ir4Sn13
• Strong enhancement of conventional superconductivity near a quantum critical point of (Ca,Sr)_3Ir_4Sn_13
• Second-order Structural Transition in Superconductor La${}_3$Co${}_4$Sn${}_{13}$
• Soft phonon modes in the vicinity of the structural quantum critical point
• Possible unconventional pairing in $(\text{Ca,Sr}{)}_3(\text{Ir,Rh}{)}_4{\text{Sn}}_{13}$ superconductors revealed by controlling disorder
• Optical spectroscopy study of charge density wave order in Sr${}_3$Rh${}_4$Sn${}_{13}$ and (Sr${}_{0.5}$Ca${}_{0.5}$)${}_3$Rh${}_4$Sn${}_{13}$
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• Experimental Determination of the Fermi Surface of Sr3Ir4Sn13
• ${}^{119}$Sn-NMR investigations on superconducting Ca${}_3$Ir${}_4$Sn${}_{13}$: Evidence for multigap superconductivity
• Possible quantum fluctuations in the vicinity of the quantum critical point of $(\mathbf{Sr},\mathbf{Ca}{)}_3\mathbf{I}{\mathbf{r}}_4\mathbf{S}{\mathbf{n}}_{13}$ revealed by high-energy X-ray diffraction study
• Interplay between charge density wave and superconductivity in multi-band systems with inter-band Coulomb interaction
• Time-reversal symmetry breaking in superconducting low-carrier-density quasi-skutterudite Lu3Os4Ge13
• Superconductivity with high upper critical field in Ta-Hf Alloys
• Incommensurate charge density wave on multiband intermetallic systems exhibiting competing orders