Inelastic electron tunneling due to magnons and phonons of antiferromagnetic layered MnPSe3 semiconductors

Inelastic electron tunneling spectra of Pb/MnPSe3/Pb junctions are measured below liquid helium temperature in the normal state of lead under an external magnetic field. The insulating barrier of MnPSe3, an antiferromagnetic layered transition metal phosphorous triselenide, is cleaved from a single crystal along the layer. The spectra are explained by interactions between tunneling electrons and MnPSe3 antiferromagnetic magnons as well as those between tunneling electrons and MnPSe3 phonons. The contribution of MnPSe3 magnons to inelastic processes is comparable to that of MnPSe3 phonons.