Document Type

Article

Publication Version

Published Version

Publication Date

5-1-2015

Journal or Book Title

Physical Review B

Volume

91

Issue

17

First Page

174513

DOI

10.1103/PhysRevB.91.174513

Abstract

Single crystals of Bi2Rh3S2 and Bi2Rh3.5S2 were synthesized by solution growth, and the crystal structures and thermodynamic and transport properties of both compounds were studied. In the case ofBi2Rh3S2, a structural first-order transition at around 165 K is identified by single-crystal diffraction experiments, with clear signatures visible in resistivity, magnetization, and specific heat data. No superconducting transition for Bi2Rh3S2 was observed down to 0.5 K. In contrast, no structural phase transition at high temperature was observed for Bi2Rh3.5S2; however, bulk superconductivity with a critical temperature, Tc≈1.7 K, was observed. The Sommerfeld coefficient γ and the Debye temperature (ΘD) were found to be 9.41 mJ mol−1K−2 and 209 K, respectively, for Bi2Rh3S2, and 22 mJ mol−1K−2 and 196 K, respectively, for Bi2Rh3.5S2. Study of the specific heat in the superconducting state of Bi2Rh3.5S2 suggests that Bi2Rh3.5S2 is a weakly coupled, BCS superconductor.

Comments

This article is from Physical Review B 91 (2015): 174513, doi:10.1103/PhysRevB.91.174513. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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