Abstract
The elementary excitation spectra of quasi-one-dimensional quantum wires is calculated and compared with inelastic light scattering experiments corresponding to recently fabricated modulation-doped quantum-well wires. Self-consistent (Hartree) potentials, wave functions, and subband structure are used as the starting point for the calculation of the collective and single-particle excitations of the system, within the random-phase-approximation. Excellent quantitative agreement is found between theory and experiment, lending strong support to the existence of a distribution of negatively charged centers close to the heterojunction interface.
- Received 29 July 1994
DOI:https://doi.org/10.1103/PhysRevB.50.15174
©1994 American Physical Society