Dmitry R. Yakovlev's research while affiliated with Technische Universität Dortmund and other places
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Publications (4)
Optical properties of a two-dimensional electron gas in ZnSe/(Zn,Be,Mg)Se quantum well structures have been examined by means Optical properties of a two-dimensional electron gas in ZnSe/(Zn,Be,Mg)Se quantum well structures have been examined by means
of photoluminescence and reflectivity techniques in external magnetic fields up to 50 T. For the s...
Optical properties of (Zn,Mn)Se/(Zn,Be)Se quantum wells containing a two-dimensional electron gas with densities varying from
109 to 5.5 × 1011 cm-2 have been studied in magnetic fields up to 45 T. A strong s — d exchange interaction of free electrons with magnetic Mn ions results in a giant Zeeman splitting of conduction band states,
that has been...
In modulation-doped quantum well structures with electron concentration of about 10(11) cm(-2), a new resonant optical transition involving four particles (one hole and three electrons) was found in external magnetic fields in photoluminescence excitation and reflectivity spectra. This transition reveals as a narrow line between exciton and trion l...
Excitons and charged excitons (trions) are investigated in ZnSe-based quantum well structures with (Zn,Be,Mg)Se and (Zn,Mg)(S,Se)
barriers by means of magneto-optical spectroscopy. Binding energies of negatively (X−) and positively (X+) charged excitons are measured as functions of quantum well width, free carrier density and in external magnetic f...
Citations
... To this end we will study below the band shape of the combined optical quantum transitions involving the creation of one magnetoexciton and the simultaneous excitation of an electron from the lower to upper Landau levels. The experimental results in this direction were published in the papers [3,4,5] . Both aspects of the magnetoexciton physics are strongly correlated with the knowledge concerning the influence of the excited Landau levels accumulated in the frame of two earlier published papers [1,2] . ...
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... For n e 3 × 10 10 cm −2 the evaluation was based on the analysis of the circular polarization degree of the photoluminescence in magnetic field [37,38]. Also for n e 5 × 10 11 cm −2 characteristic modifications of the photoluminescence and reflectivity spectra are observed in strong magnetic fields at integer filling factors, which give access to the 2DEG density [39][40][41]. ...
