Abstract
A theory of double magnetophonon resonance (MPR) in quantum wells in magnetic field is developed. The magnetic field is assumed to be tilted at an angle θ to the perpendicular to the plane of quantum well. The resonance is due to the resonant interaction of two-dimensional conduction electrons with the longitudinal optic phonons. The electrons are assumed to be nondegenerate. The θ dependence of MPR maxima is investigated. The existence of a double resonance, i.e., two resonant peaks for each value of (the number of resonance) and sharpness of the θ dependence is explained by the screening in conjunction with the combined role of the phonon and electon damping and variation of electron concentration in the well with magnetic field.
- Received 16 March 2001
DOI:https://doi.org/10.1103/PhysRevB.65.115301
©2002 American Physical Society