Quantum-Confined States of Electrons in Semiconductor Quantum Ring Under Crossed Electromagnetic Field

Quantum-confined states of electrons inside quantum ring-like structure have been analytically investigated subjected to crossed electromagnetic field in order to study the effect of field quantization. Schrodinger equation without considering time-dependency factor is solved with boundary conditions based on the cylindrical geometry of the structure, and lowest two orders Bessel functions are considered for the evaluation of electron energy states. Result reveals that while perpendicular electric field lowers the energy subbands, parallel magnetic field makes the opposite effect; thus creating an interesting trade-off situation. The result is weighted against with that acquired independently in absence of electric field and magnetic field respectively for identical dimensions. The present work reflects this energy optimization by simultaneous tailoring of both the fields in order to obtain absorption and emission spectra.