Abstract
Despite lots of research activities on topological materials, a highly tunable system is yet to be realized as a material platform for exploration of versatile magneto-/opto-/thermoelectronic properties. The authors followed an important scheme for topological phase transitions proposed by S. Murakami et al. and could find a highly tunable topological system based on PbTe-SnTe alloy doped with In. By varying parameters, Pb/Sn ratio and In doping, they can tune the system from trivial to topological-crystalline insulators across a finite range of materials, where the system shows polar distortion and topological semi-metal behaviors with low-carrier density, high mobility and anomalous (in-plane as well as out-of-plane field) Hall effects.
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