Abstract
Optically detected resonance spectroscopy has been used to study resonant absorption of electrons, holes, and their complexes in quantum wells (QW’s) in magnetic fields up to 15 T. In undoped multiple-QW samples with well widths of 12.5, 15, and 20 nm, in addition to an electron and two hole cyclotron resonances, (in the hydrogenic notation) internal exciton transitions (IET’s) arising from two distinct neutral heavy-hole magneto-excitons were observed. The unique capability of observing electron and hole cyclotron resonance as well as several IET’s in a single sample permitted verification of a predicted relationship resulting from the symmetry of the magnetoexciton Hamiltonian, namely, where is the electron (hole) cyclotron frequency, and is the energy of the transition.
- Received 2 November 1999
DOI:https://doi.org/10.1103/PhysRevB.62.2773
©2000 American Physical Society