Shallow donor spectroscopy and polaron coupling in Ga0.47In0.53As

R. J. Nicholas, C. K. Sarkar, L. C. Brunei, S. Huant, J. C. Portal, M. Razeghi, J. Chevrier, J. Massies, H. M. Cox

Research output: Contribution to journalLetterpeer-review

16 Scopus citations


An investigation of shallow donor energy levels in magnetic fields in the ternary alloy Ga0 47In0.53As, lattice matched to InP, has been made. Transitions between Is and 2p energy levels of shallow hydrogenic donors have been observed in photoconductivity as a function of magnetic field. Transition energies and their magnetic field dependence are well predicted by the use of an effective Rydberg, however it is found that the Is to 2p+ transition energy deviates from the theoretical value at high fields. This clearly indicates strong polaron pinning of the 2p+ level to two lo phonon modes which are ‘GaAs’-like and TnAs’-like, arising from the GalnAs.

Original languageEnglish (US)
Pages (from-to)L427-L431
JournalJournal of Physics C: Solid State Physics
Issue number15
StatePublished - May 30 1985

ASJC Scopus subject areas

  • Condensed Matter Physics
  • General Engineering
  • General Physics and Astronomy


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