e investigate the coherent focusing in a weak magnetic field of a two-dimensional hole gas realized in a semiconductor heterostructure. By use of a simple model, we study how the coherence effects displayed by ballistic conduction electrons are modified if warped and nonparabolic bands are taken into account. We
Band-structure effects on coherent focusing in a two dimensional hole gas / Goldoni, Guido; A., Fasolino. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - STAMPA. - 44:(1991), pp. 8369-8372.