Coulomb Interaction in Quantum Dot with a Precessing Magnetic Field

We study electronic transport through a quantum dot(QD)with a precessing magnetic field.By usingthe Keldysh nonequilibrium Green function method,formulas of local density of states (LDOS) and conductance of QDare derived self-consistently.It shows that the LDOS and conductance have obvious changes with the Coulomb blockadeinteraction.The intensity and angle of the magnetic field or temperatures,which reflect the mesoscopic structure of theQD are derived.The superiority of this device is that the QD can be controlled easily by the magnetic field,so it isvaluable to apply in generating,manipulating and probing spin state.