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Binding energies of helium-like impurities in parabolic quantum wells under an applied electric field |
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| Institution: | 1. Department of Physics, Trakya University, Edirne 22030, Turkey;2. Department of Physics, Middle East Technical University, Ankara 06531, Turkey;1. Young Researchers and Elite Club, Shiraz Branch, Islamic Azad University, Shiraz, Iran;2. Zarghan Branch, Islamic Azad University, Zarghan, Iran;1. Department of Physics, Trakya University, Edirne 22030, Turkey;2. Department of Electronics, Trakya University Edirne Vocational College of Technical Sciences, Edirne 22100, Turkey |
| Abstract: | We present a variational method to compute the binding energies of helium-like impurities in finite parabolic GaAs- Ga1 − xAlxAs quantum wells. The effects of band nonparabolicity in the conduction band are taken into account within the effective mass approximation. The dependence of the impurity binding energy on the applied electric field and the impurity position is also discussed together with the polarization effect for all cases. |
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