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High-field Zeeman contribution to the trion binding energy

Research output: Contribution to journalJournal article


  • Tony Vanhoucke
  • M Hayne
  • Mohamed Henini
  • Victor V Moshchalkov
Article number041307
Journal publication date15/01/2002
JournalPhysical Review B
Journal number4
Number of pages4
Original languageEnglish


We examine the role of the Zeeman interaction in determining the bound states of the trion at magnetic fields up to 50 T. Polarization-sensitive photoluminescence measurements on the singlet state of the positively charged trion (X+) in GaAs quantum wells demonstrate a 60% enhancement of the g factor compared to that of the neutral exciton (X-0) in the same sample. This leads to a situation in very high fields where the Zeeman splitting of X+ is sufficiently large to determine whether a state is bound or not, and so calls for a reexamination of what is meant by the binding energy of few particle systems.

Bibliographic note

© 2002 The American Physical Society