Experimental and Theoretical Studies of Free and Acceptor-Bound Positive Magneto-Trions
L. Bryja a, A. Wójs a, P. Płochocka-Polack b, A. Gładysiewicz a, J. Misiewicz a and M. Potemski b
a Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
b Grenoble High Magnetic Field Laboratory, CNRS, 38042 Grenoble Cedex 9, France
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Received: 9 06 2007;
By combination of polarization-resolved photoluminescence, transport, and realistic numerics we study energy and recombination spectra of free and acceptor-bound positive trions in a quasi-two-dimensional hole gas. The singlet-triplet crossing in the trion ground state is found at B ≈ 12 T, and a slight reduction of all trion binding energies coincident with the formation of a Laughlin hole fluid is observed at B ≈14.2 T.
DOI: 10.12693/APhysPolA.112.415
PACS numbers: 71.55.Cn, 71.35.Ji, 73.21.Fg