Impact of optical phonon scattering on magnetotransport in double-barrier heterostructures

摘要

The transport in double-barrier heterostructures of electrons interactingwith longitudinal optical phonons in the presence of parallel electric andmagnetic fields is analyzed theoretically with the aid of a 3-dimensionalquantum transport simulator. Inter Landau state transitions induced byLO-phonon scattering-assisted resonant-tunneling is shown to be an importantprocess with a probability comparable to that of intra Landau state scattering.Analysis of the current-voltage characteristics reveals also that the currentpeak is a periodic function of the inverse of the magnetic field, with a perioddependent on the quasi-resonant energy level.