Persistent photoconductivity in ii-vi magnetic two-dimensional electron gases

O. Ray, I. P. Smorchkova, N. Samarth

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Abstract

Persistent photoconductivity is studied in ZnSe/(Zn,Cd,Mn)Se two-dimensional electron-gas structures as a function of Mn concentration. Measurements of spectral photoconductivity, photoinduced transient spectroscopy, and deep-level transient Fourier spectroscopy show the presence of a deep trap located 2.1 eV below the conduction band at near room temperature. The buildup of persistent photoconductivity and its decay kinetics are formulated in accordance with the large lattice relaxation model. Implications of the presence of Mn in the two-dimensional electron gas are discussed.

Original languageEnglish (US)
Pages (from-to)9810-9813
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume59
Issue number15
DOIs
StatePublished - Jan 1 1999

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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