Superconducting properties of Rh9In4S4 single crystals

作者：Kaluarachchi Udhara S^*; Lin Qisheng; Xie Weiwei; Taufour Valentin; Bud'ko Sergey L; Miller Gordon J; Canfield Paul C

来源：Physical Review B, 2016, 93(9): 094524.

DOI：10.1103/PhysRevB.93.094524

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, T-c similar to 2.25 K. The Sommerfeld coefficient gamma and the Debye temperature(Theta(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) is large: kappa similar to 60. Furthermore, we observed a peak effect in the resistivity measurement as a function ratio of the low-temperature GL-penetration depth, lambda(GL) approximate to 5750 angstrom, to the GL-coherence length, xi(GL) approximate to 94 angstrom, of both temperature and magnetic field.

• 出版日期2016-3-28