Growth and angular dependent resistivity of Nb2Pd0.73S5.7 superconducting single crystals fiber

Abstract

We report the growth of Nb2Pd0.73S5.7 superconducting single crystal fibers via slow cooling solid state reaction method. Superconducting transition temperature (Tc ∼ 6.5 K) is confirmed from magnetization and transport measurements. A comparative study is performed for determination of superconducting anisotropy, Γ via conventional method (by taking ration of two superconducting parameters) and scaling approach method. Scaling approach, defined within the framework of the Ginzburg–Landau theory is applied to the angular dependent resistivity measurements to estimate the anisotropy. The value of Γ close to Tc from scaling approach is found to be ∼2.5 that is slight higher compare to conventional approach (∼2.2). Further, variation of anisotropy with temperature suggests that it is a type of multi-band superconductor.