Hydrogenic impurities in graded GaAs-(Ga,Al)As quantum-well wires in an electric field

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Kasapoglu E. , Sari H. , Sokmen I.

PHYSICA B-CONDENSED MATTER, cilt.315, ss.261-266, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 315 Konu: 4
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0921-4526(02)00469-6
  • Sayfa Sayıları: ss.261-266


The electric field dependence of polarizability and binding energy of shallow-donor impurities in graded quantum-well wires is calculated by a variational method and in the effective-mass approximation. We have considered a finite confinement model and the results are compared with that of infinite confinement potential. Our calculations have revealed the dependence of the impurity binding and polarizability on the field direction in the graded quantum-well wire. (C) 2002 Elsevier Science B.V. All rights reserved.