Novel method to determine effective length of quantum confinement using fractional-dimension space approach |
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Authors: | Hua Li Bing-Can Liu Bing-Xin Shi Si-Yu Dong Qiang Tian |
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Institution: | 1. Department of Physics, Beijing Normal University, Beijing 100875, China
2. Department of Fundamental Courses, Academy of Armored Forces Engineering, Beijing 100072, China |
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Abstract: | The binding energy and effective mass of a polaron confined in a GaAs film deposited on an AlxGa1-x As substrate are investigated, for different film thickness values and aluminum concentrations and within the framework of the fractional-dimensional space approach. Using this scheme, we propose a new method to define the effective length of the quantum confinement. The limitations of the definition of the original effective well width are discussed, and the binding energy and effective mass of a polaron confined in a GaAs film are obtained. The fractional-dimensional theoretical results are shown to be in good agreement with previous, more detailed calculations based on second-order perturbation theory. |
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Keywords: | fractional-dimensional approach effective length of quantum confinement polaron effect GaAs film |
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