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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
<mark>Journal publication date</mark>15/01/2002
<mark>Journal</mark>Physical Review B
Number of pages4
<mark>Original language</mark>English


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