In this work, the enhanced photonic spin Hall effect (PSHE) of reflected light at terahertz range is achieved by using a multilayer structure consisting Dirac semimetal, spacer layer, and distributed Bragg reflector structure. This PSHE phenomenon originates from excitation optical Tamm states (OTSs) interface between semimetal The theoretical results show that optimizing Fermi energy thickness...

Abstract Topological semimetals, in which conduction and valence bands cross each other at either discrete points or along a closed loop with symmetry protected the momentum space, exhibited great potential applications of optical devices as well heterogeneous catalysts antiferromagnetic spintronics, especially when crossing points/lines matches Fermi level ( E F ). It is intriguing to find ‘id...

Abstract The BaAl 4 prototype crystal structure is the most populous of all types, and building block for a diverse set sub-structures including famous ThCr 2 Si family that hosts high-temperature superconductivity numerous magnetic strongly correlated electron systems. MA materials (M = Sr, Ba, Eu; A Al, Ga, In) themselves present an intriguing ground states charge spin orders, but have largel...