Resonant Peak Splitting for Ballistic Conductance in Two-Dimensional Electron Gas Under Electromagnetic Modulation

By developing a transfer-matrix method,the resonant peaks splitting of ballistic conductance are investigated into the two-dimensional electron gas system with both electric and magnetic modulations of nanoscale periods.It is found that there exists the n-fold resonant peak splitting for ballistic conductance through n perpendicular magnetic barriers to n electric barriers.With a combination of m magnetic barriers and n electric barriers by increasing the amplitude of electric field,the folds of the splitting would shift from m- to n-1.