Record number :
Title of article :
Bound polaron in a spherical quantum dot under an electric field
Author/Authors :
Y.F. Huangfu، نويسنده , , Z.W. Yan، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2008
Pages :
From page :
To page :
Abstract :
A variational approach is used to study the ground state of a bound polaron in a spherical quantum dot under an external electric field. The binding energy of the hydrogenic impurity state is calculated by taking the interaction of an electron with both the confined longitudinal optical phonons and the surface optical phonons into account. The interaction between impurity and longitudinal optical phonons has also been considered to obtain the binding energy of a bound polaron. It shows that the polaron effects give significant corrections to the binding energy and its Stark energy shift. The external electric field increases the phonon contributions to the binding energy.
Keywords :
Quantum dot , Electric field , Polaron effect , Stark energy shift
Journal title :
Physica E Low-dimensional Systems and Nanostructures
Serial Year :
Link To Document :