SKYRMION-HOLE EXCITATIONS AT V=1 STUDIED BY PHOTOLUMINESCENCE SPECTROSCOPY

We present measurements of photoluminescence from the incompressible t wo-dimensional electron system at filling factor v = 1. By varying the doping density, sample structure and angle between magnetic field and confinement plane we investigate the influence of electron-electron a nd electron-valence hole interactions on the photoluminescence spectru m. We find that a strong electron-valence hole interaction suppresses a characteristic discontinuity in the photoluminescence energy. In all samples studied the electron-valence hole interaction is strong enoug h to prevent observation of a theoretically predicted tilt-induced shr inkage of skyrmion-charged spin texture excitations. (C) 1998 Elsevier Science B.V. All rights reserved.