Ballistic conductance in a diluted magnetic semiconductor quantum ring

In the present paper, we have calculated the ballistic conductance in a quantum ring in a diluted magnetic semiconductor (DMS) material in the presence of a magnetic field by using the tunneling Hamiltonian method. We take into account the effect of the Rashba spin-orbital interaction, the exchange interaction and the Zeeman term on the ballistic conductance. We have calculated the energy spectrum and wave functions of the electrons. Moreover we have calculated the ballistic conductance dependency on the flux and Mn concentration at zero temperature of a diluted magnetic semiconductor quantum ring. It has been shown that the dependency of the conductance as a function of flux exhibits resonances whose positions are determined by the quasi-bound discrete levels of the electron in the DMS quantum ring.