کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1546187 | 997610 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effects of position-dependent effective mass of a hydrogenic donor impurity in a ridge quantum wire Effects of position-dependent effective mass of a hydrogenic donor impurity in a ridge quantum wire](/preview/png/1546187.png)
In the present work, We calculate the donor binding energy for a V-groove GaAs/AlxGa1−xAsGaAs/AlxGa1−xAs quantum wire using a variational procedure within the effective mass approximation. We present a relation for the position-dependent effective mass in V-groove quantum wire which is a function of wire parameters. Calculations are presented with both constant effective mass and position-dependent effective masses for different dimensions of ridge quantum wire. We find that the position-dependent effective mass plays an important effect in the binding energy of the donor impurity in a ridge quantum wire. Also, we observe that the position-dependent effective mass in x-direction depends on all wire parameters, but in y-direction it depends on only one wire parameter.
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 42, Issue 5, March 2010, Pages 1503–1508