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Binding Energy of a Bound Polaron in a Quantum Well Wire

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Bouhassoune M., Charrour R., Fliyou M., Bria D., Nougaoui A.

Acta Physica Polonica A

2000

vol. 98

issue 1-2

111-122

Theoretical study of the binding energies of an off-center donor hydrogenic impurity in a cylindrical quantum well wires semiconductor is presented. Calculations are performed in the framework of the effective mass approximation using the variational approach. We describe the effect of the quantum confinement by an infinitely deep potential well and we take into consideration the interaction between the charge carrier (electron and ion) and the optical phonons (confined longitudinal optical and surface optical). Our results show that the impurity binding energy depends strongly on the spatial confinement, the impurity position and the polaronic corrections.

Polaron Effect on the Binding Energy of Shallow Donor in Cylindrical Quantum Dot

100%

Charrour R., Bouhassoune M., Bria D., Nougaoui A., Fliyou M.

vol. 96

issue 6

759-768

In the framework of the effective-mass approximation and the modified Lee-Low-Pines variational method, we present a theoretical study of the effect of the confined longitudinal-optical phonon and two types of surface-optical phonon (top and side mode) on the binding energy of shallow donor in cylindrical quantum dot. The effect of quantum confinement is described by an infinitely deep potential well. The impact of these different phonon modes is important and depends on the dimension of the quantum dot.

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2 Acta Physica Polonica A

1 2000

1 1999

2 Bouhassoune M.

2 Bria D.

2 Charrour R.

2 Fliyou M.

2 Nougaoui A.

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Binding Energy of a Bound Polaron in a Quantum Well Wire

Polaron Effect on the Binding Energy of Shallow Donor in Cylindrical Quantum Dot