Valence band spectroscopy in V-grooved quantum wires
  We present a combined theoretical and experimental study of the anisotropy in the optical absorption of V-shaped quantum wires. By means of realistic band structure calculations for these structures, we show that detailed information on the heavy- and light-hole states can be singled out from the anisotropy spectra {\em independently of the electron confinement}, thus allowing accurate valence band spectroscopy. 
G. Goldoni (1), F. Rossi (1), E. Molinari (1), A. Fasolino (1,2) R.   Rinaldi (3), and R. Cingolani (3) ((1) Dipartimento di...