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Safarpour, Gh., Moradi, M., Izadi, M. A., Novzari, M., Niknam, E.. (1394). The effect of conduction band nonparabolicity on binding energy of a GaAs quantum dot embedded at the center of a Ga1-xAlxAs nano-wire. , 39(3), 253-258. doi: 10.22099/ijsts.2015.3148
Gh. Safarpour; M. Moradi; M. A. Izadi; M. Novzari; E. Niknam. "The effect of conduction band nonparabolicity on binding energy of a GaAs quantum dot embedded at the center of a Ga1-xAlxAs nano-wire". , 39, 3, 1394, 253-258. doi: 10.22099/ijsts.2015.3148
Safarpour, Gh., Moradi, M., Izadi, M. A., Novzari, M., Niknam, E.. (1394). 'The effect of conduction band nonparabolicity on binding energy of a GaAs quantum dot embedded at the center of a Ga1-xAlxAs nano-wire', , 39(3), pp. 253-258. doi: 10.22099/ijsts.2015.3148
Safarpour, Gh., Moradi, M., Izadi, M. A., Novzari, M., Niknam, E.. The effect of conduction band nonparabolicity on binding energy of a GaAs quantum dot embedded at the center of a Ga1-xAlxAs nano-wire. , 1394; 39(3): 253-258. doi: 10.22099/ijsts.2015.3148

The effect of conduction band nonparabolicity on binding energy of a GaAs quantum dot embedded at the center of a Ga1-xAlxAs nano-wire

Iranian Journal of Science
مقاله 2، دوره 39، شماره 3، آذر 2015، صفحه 253-258    اصل مقاله (527.55 K)
نوع مقاله: Regular Paper
شناسه دیجیتال (DOI): 10.22099/ijsts.2015.3148
نویسندگان
Gh. Safarpour* 1؛ M. Moradi2؛ M. A. Izadi1؛ M. Novzari1؛ E. Niknam1
1Zarghan Branch, Islamic Azad University, Zarghan, Iran
2Department of Physics, College of Sciences, Shiraz University, Shiraz 71454, Iran
چکیده
 
The effects of conduction band nonparabolicity, aluminum concentration and external electric field on the charge density and binding energy of an on-center hydrogenic donor impurity in a spherical quantum dot which is located at the center of a cylindrical nano-wire are studied. The energy eigenvalues and the corresponding wave functions are calculated using finite difference approximation within the effective mass framework. The results reveal that the binding energies (I) decrease as the electric field increases, (II) become negligible for large values of electric field, (III) increase as the aluminum concentration increases and (IV) the conduction band nonparabolicity has a noticeable effect on the binding energy, and hence should be taken into account.
کلیدواژه‌ها
binding energy؛ Conduction band nonparabolicity؛ electric field؛ Spherical quantum dot؛ Nano-wire
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