Transport properties of superconducting high indium-doped SnTe single crystals

The discovery of topological crystalline insulator SnTe has ignited a search for the predicted topological superconductors. Recently, we performed the transport measurement on a series of indium-doped SnTe single crystals (Sn$_{\mathrm{1-x}}$In$_{\mathrm{x}}$Te). Hall measurement shows that carrier type changes when indium doping level is between x $=$ 0.2 and 0.3. Weak anti-localization effect and Shubnikov-de Hass oscillations was found in x $=$ 0.45 samples, which have the highest superconducting transition temperature at 4.5 K. Both superconducting and normal state properties of high indium-doped SnTe will be discussed.