Trions in ZnSe-based quantum wells probed by 50 T magnetic fields

D. R. Yakovlev, G. V. Astakhov, W. Ossau, S. A. Crooker, K. Uchida, N. Miura, A. Waag, N. A. Gippius, A. Yu Sivachenko, A. B. Dzyubenko

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Singlet and triplet states of negatively charged excitons (trions) in ZnSe/(Zn,Be,Mg)Se quantum wells have been studied by means of photoluminescence in pulsed magnetic fields up to 50 T. Singlet state binding energies, measured for different well widths ranging from 48 to 190 Å, show a monotonic increase with growing magnetic fields with a tendency to saturation. This behavior is in qualitative agreement with results of model calculations. Quantitatively, the binding energy of singlet states is underestimated by about 50%. The triplet state assigned to the "dark" triplet becomes detectable in magnetic fields above 15 T. A crossover of the triplet and singlet states is expected in magnetic fields of about 50 T.

Original languageEnglish
Pages (from-to)353-363
Number of pages11
JournalPhysica Status Solidi (B) Basic Research
Volume227
Issue number2
DOIs
Publication statusPublished - Oct 2001
Externally publishedYes

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