Superconducting properties of Rh${}_9$In${}_4$S${}_4$ single crystals

Abstract

The synthesis and crystallographic, thermodynamic and transport properties of single crystalline Rh${}_9$In${}_4$S${}_4$ were studied. The resistivity, magnetization and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, $T_c\sim$ 2.25 K. The Sommerfeld coefficient $\gamma$ and the Debye temperature(${\Theta }_{\text{D}}$) were found to be 34 mJ mol${}^{-1}$ K${}^{-2}$ and 217 K respectively. The observed specific heat jump, $\Delta C/\gamma T_c$ = 1.66, is larger than the expected BCS weak coupling value of 1.43. Ginzburg-Landau (GL) ratio of the low temperature GL-penetration depth, ${\lambda }_{\text{GL}}$$\approx$ 5750Å, to the GL-coherence length, ${\xi }_{\text{GL}}$$\approx$ 94Å, is large: $\kappa$ $\sim$ 60. Furthermore, we observed a peak effect in the resistivity measurement as a function of both temperature and magnetic field.

References in corpus (3)

• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Use of frit-disc crucibles for routine and exploratory solution growth of single crystalline samples
• Superconductivity versus structural phase transition in the closely related Bi${}_2$Rh${}_{3.5}$S${}_2$ and Bi${}_2$Rh${}_3$S${}_2$

Cited by in corpus (6)

• New Materials Physics
• Superconductivity in Hexagonal BaPtAs: SrPtSb- and YPtAs-type Structures with Ordered Honeycomb Network
• Vortex creep at very low temperatures in single crystals of the extreme type-II superconductor Rh${}_9$In${}_4$S${}_4$
• Physical properties and electronic structure of the two-gap superconductor V${}_2$Ga${}_5$
• London penetration depth at zero temperature and near superconducting transition
• Superconducting properties of van der Waals metal-rich subsulfide Nb${}_{1.7}$Ta${}_{3.3}$S${}_2$