Skyrmions in a Hole Gas with Large Spin Gap and Strong Disorder
L. Bryjaa, K. Ryczkoa, A. Wójsa, J. Misiewicza and M. Potemskib
aInstitute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
bGrenoble High Magnetic Field Laboratory, CNRS, 38042 Grenoble Cedex 9, France
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Received: 17 06 2006;
In the photoluminescence excitation spectra of two-dimensional valence holes with large spin gap and strong disorder we find evidence for quantum Hall ferromagnetism and small skyrmions around the Landau level filling factorν=1. This interpretation is supported by numerical calculations.
DOI: 10.12693/APhysPolA.110.163
PACS numbers: 73.20.Mf, 73.21.Fg, 78.20.Ls, 78.67.De