| Built-in electric field effect on cyclotron mass of magnetopolarons in a wurtzite In_xGa_（1-x）N/GaN quantum well |
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| 引用本文： | 赵凤岐,咏梅.Built-in electric field effect on cyclotron mass of magnetopolarons in a wurtzite In_xGa_（1-x）N/GaN quantum well[J].中国物理 B,2012,21(10):107103-107103. |
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| 作者姓名： | 赵凤岐 咏梅 |
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| 作者单位： | [1]School of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China [2]School of Electrical, Electronic, and Computer Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant No. 10964007）; the Natural Science Foundation of Inner Mongolia,China （Grant No. 2009MS0110） |
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| 摘 要： | The cyclotron mass of magnetopolarons in wurtzite In x Ga 1 x N/GaN quantum well is studied in the presence of an external magnetic field by using the Larsen perturbation method.The effects of the built-in electric field and different phonon modes including interface,confined and half-space phonon modes are considered in our calculation.The results for a zinc-blende quantum well are also given for comparison.It is found that the main contribution to the transition energy comes from half-space and interface phonon modes when the well width is very small while the confined modes play a more important role in a wider well due to the location of the electron wave function.As the well width increases,the cyclotron mass of magnetopolarons first increases to a maximum and then decreases either with or without the built-in electric field in the wurtzite structure and the built-in electric field slightly reduces the cyclotron mass.The variation of cyclotron mass in a zinc-blende structure is similar to that in a wurtzite structure.With the increase of external magnetic field,the cyclotron mass of polarons almost linearly increases.The cyclotron frequency of magnetopolarons is also discussed.
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| 关 键 词： | 回旋加速器 磁极化子 电场效应 纤锌矿型 量子阱 GaN 质量 内置 |
| 收稿时间： | 2012-02-02 |
Built-in electric field effect on cyclotron mass of magnetopolarons in a wurtzite InxGa1-xN/GaN quantum well |
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| Zhao Feng-Qi,Yong Mei.Built-in electric field effect on cyclotron mass of magnetopolarons in a wurtzite InxGa1-xN/GaN quantum well[J].Chinese Physics B,2012,21(10):107103-107103. |
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| Authors: | Zhao Feng-Qi Yong Mei |
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| Institution: | a College of Physics and Electronic Information, Inner Mongolia Normal University, Inner Mongolia KeyLaboratory for Physics and Chemistry of Functional Materials, Hohhot 010022, China;b Division of Science and Technology, Inner Mongolia Normal University, Hohhot 010022, China |
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| Abstract: | The cyclotron mass of magnetopolarons in wurtzite InxGa1-xN/GaN quantum well is studied in the presence of an external magnetic field by using the Larsen perturbation method. The effects of the built-in electric field and different phonon modes including interface, confined and half-space phonon modes are considered in our calculation. The results for a zinc-blende quantum well are also given for comparison. It is found that the main contribution to the transition energy comes from half-space and interface phonon modes when the well width is very small while the confined modes play a more important role in a wider well due to the location of the electron wave function. As the well width increases, the cyclotron mass of magnetopolarons first increases to a maximum and then decreases either with or without the built-in electric field in the wurtzite structure and the built-in electric field slightly reduces the cyclotron mass. The variation of cyclotron mass in a zinc-blende structure is similar to that in a wurtzite structure. With the increase of external magnetic field, the cyclotron mass of polarons almost linearly increases. The cyclotron frequency of magnetopolarons is also discussed. |
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| Keywords: | wurtzite quantum well built-in electric field magnetopolaron cyclotron mass |
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