Dynamics of charge-transfer excitons in type-II semiconductor heterostructures

M. Stein, C. Lammers, P. H. Richter, C. Fuchs, W. Stolz, M. Koch, O. Vänskä, M. J. Weseloh, M. Kira, Stephan W Koch

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7 Scopus citations


The formation, decay, and coherence properties of charge-transfer excitons in semiconductor heterostructures are investigated by applying four-wave-mixing and terahertz spectroscopy in combination with a predictive microscopic theory. A charge-transfer process is identified where the optically induced coherences decay directly into a charge-transfer electron-hole plasma and exciton states. It is shown that charge-transfer excitons are more sensitive to the fermionic electron-hole substructure than regular excitons.

Original languageEnglish (US)
Article number125306
JournalPhysical Review B
Issue number12
StatePublished - Mar 26 2018
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Stein, M., Lammers, C., Richter, P. H., Fuchs, C., Stolz, W., Koch, M., Vänskä, O., Weseloh, M. J., Kira, M., & Koch, S. W. (2018). Dynamics of charge-transfer excitons in type-II semiconductor heterostructures. Physical Review B, 97(12), [125306]. https://doi.org/10.1103/PhysRevB.97.125306