Controlling helicity-dependent photocurrent in polycrystalline Sb${}_2$Te${}_2$Se topological insulator thin films at ambient temperature through wave-vector of and photothermal gradient due to polarized light

Samrat Roy, Subhadip Manna, Chiranjib Mitra +1

Optical control of helicity-dependent photocurrent in topological insulator Sb${}_2$Te${}_2$Se has been studied at room temperature on dominantly c-axis oriented granular polycrystalli…