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- W2058194670 abstract "The stability of neutral (D0) and negative charged donor (D−) on- and off-center in anisotropic cylindrical quantum dot (CQD) is studied by use of a variational approach. Two-parameter anisotropic trial wave function which includes electron-correlation effects is utilized, to explore strong and weak confinement regions. A comparison between one and two-parameter trial wave functions results is introduced. The finite barrier height and the CQD dimensions, dependence of the “stability and the binding energy” of the D0 and the D− is obtained. It has been shown that the donor's stability dependent on CQD dimensions and the confinement potential in strong confinement region but in weak confinement region, the stability of D0 and D− is dependent strongly on the quantum dot (QD) radius R. It has been found that the donors D0 and D− off-center are less stable than the on-center impurities, and also the off-center donors more stable in small CQDs. It has shown that the stability of D− depends on the energy of the excess electron." @default.
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- W2058194670 date "2009-08-01" @default.
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- W2058194670 title "Stability of neutral and negative donor impurity in a semiconductor cylindrical quantum dot" @default.
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- W2058194670 doi "https://doi.org/10.1016/j.physb.2009.04.027" @default.
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