کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1546681 | 1512906 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phonon effect on binding energies of impurity states in cylindrical quantum wires of polar semiconductors under an electric field
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
Phonon effect on hydrogenic impurity states in cylindrical quantum wires of polar semiconductors under an applied electric field is studied theoretically by a variational approach. The binding energies are calculated as functions of the transverse dimension of the quantum wire, and the donor-impurity position under different fields. The electron-phonon interaction is considered in the calculations by taking both the confined bulk longitudinal optical phonons and interface optical phonons as well as the impurity-ion-phonon coupling. The numerical results for the CdTe and GaAs quantum wires are given and discussed as examples. It is confirmed that the electron-phonon interaction obviously reduces both the binding energy and the Stark energy-shift of the bound polarons in quantum wires.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 40, Issue 10, September 2008, Pages 3086-3091
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 40, Issue 10, September 2008, Pages 3086-3091
نویسندگان
Zeng-Ru Zhao, X.X. Liang,