VALENCE-BAND STRUCTURE, EDGE STATES, AND INTERBAND ABSORPTION IN QUANTUM-WELL WIRES IN HIGH MAGNETIC-FIELDS

We present a theoretical study of the magnetic band structure of condu ction and valence states in quantum-well wires in high magnetic fields . We show that hole mixing results in a very complex behavior of valen ce edge states with respect to conduction states, a fact which is like ly to be important in magnetotransport in the quantum Hall regime. We show how the transition from one-dimensional subbands to edge states a nd to Landau levels can be followed by optical experiments by choosing the appropriate, linear or circular, polarization of the light, yield ing information on the one-dimensional confinement.