Materials exhibiting bulk superconductivity along with magnetoresistance (MR) in their normal state have emerged as suitable candidates for topological superconductivity. In this article, we report a flux free method to synthesize single crystal of topological superconductor candidate SnAu. The phase purity and single crystalline nature are confirmed through various characterizations viz. x-ray diffraction, field emission scanning electron microscopy, selected area electron diffraction, and transmission electron microscopy. Chemical states of the constituent element viz. Sn and Au are analysed through x-ray photoelectron spectroscopy. Superconductivity in synthesized SnAu single crystal is evident formplot, for which the critical field () is determined throughplot at 2 K i.e. just below critical temperature. A positive MR is observed inmeasurements at different temperatures above, viz. at 3 K, 5 K, 10 K and 20 K. Further, the magnetoconductivity (MC) is analysed by using Hikami-Larkin-Nagaoka formalism, which signifies the presence of weak antilocalization (WAL) effect in SnAu. Angle dependent magneto-transport measurement has been performed to detect the origin of observed WAL effect in SnAu single crystal. Normalized MC vscosplot shows presence of topological surface states in the studied system. It is evident that SnAu is a 2.6 K topological superconductor.
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