Abstract
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.
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