H Sari et al 2003 Semicond. Sci. Technol. 18 470 doi:10.1088/0268-1242/18/6/313
H Sari1, E Kasapoglu1, I Sokmen2 and N Balkan3
Show affiliationsUsing a variational method and within the effective mass approximation, we calculate the laser-field dependence of binding energy and the polarizability of shallow-donor impurities in graded quantum wells under an external static electric field. We have shown that, in the graded quantum well structures, not only the 'dressed' potential but also the direction of the external electric field parallel to the growth direction play very important roles in the determination of the binding energy and the polarizability of a hydrogenic impurity.
Condensed matter: electrical, magnetic and optical
Issue 6 (June 2003)
Received 10 January 2003, in final form 11 March 2003
Published 10 April 2003
H Sari et al 2003 Semicond. Sci. Technol. 18 470
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