The effect of intense laser field on the photoionization cross-section and binding energy of shallow donor impurities in graded quantum-well wire under an electric field


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Kasapoglu E. , Sari H. , Yesilgul U., Sokmen I.

JOURNAL OF PHYSICS-CONDENSED MATTER, vol.18, no.27, pp.6263-6271, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 27
  • Publication Date: 2006
  • Doi Number: 10.1088/0953-8984/18/27/009
  • Title of Journal : JOURNAL OF PHYSICS-CONDENSED MATTER
  • Page Numbers: pp.6263-6271

Abstract

The laser-field dependence of the impurity binding energy and donor-related photoionization cross-section in graded quantum-well wire under an external static electric field is calculated by a variational method and in the effective mass approximation. We have shown that, in the graded quantum-well wire structures, not only the 'dressed' potential but also the applied direction of the external electric field plays a very important role in the determination of the binding energy.