Chemistry, Physics and Astronomy, Ames Laboratory
Journal or Book Title
Physical Review B
The synthesis and crystallographic, thermodynamic, and transport properties of single crystalline Rh9In4S4 were studied. The resistivity, magnetization, and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, Tc∼2.25 K. The Sommerfeld coefficient γ and the Debye temperature (ΘD) were found to be 34 mJ mol−1 K−2 and 217 K, respectively. The observed specific heat jump, ΔC/γTc=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, λGL≈5750 Å, to the GL-coherence length, ξGL≈94 Å, is large: κ ∼60. Furthermore, we observed a peak effect in the resistivity measurement as a function of both temperature and magnetic field.
American Physical Society
Kaluarachchi, Udhara S.; Lin, Qisheng; Xie, Weiwei; Taufour, Valentin; Bud’ko, S. L.; Miller, Gordon J.; and Canfield, Paul C., "Superconducting Properties of Rh 9 In 4 S 4 Single Crystals" (2016). Chemistry Publications. 979.