| 量子阱中束缚光学极化子 |
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| 引用本文： | 陈伟丽,肖景林.量子阱中束缚光学极化子[J].内蒙古民族大学学报(自然科学版),2005,20(5):495-500. |
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| 作者姓名： | 陈伟丽 肖景林 |
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| 作者单位： | 内蒙古民族大学,物理与机电学院,内蒙古,通辽,028043 |
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| 基金项目： | 内蒙古高校科研基金项目(NJ04059) |
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| 摘 要： | 采用线性组合算符及幺正变换方法研究了量子阱中强、弱耦合束缚光学极化子的性质．导出了量子阱中束缚光学极化子的基态能量与库仑束缚势、电子-LO声子的耦合强度和阱宽的变化关系．通过数值计算结果表明：基态能量因电子-LO声子的耦合强度和库仑束缚势的不同而不同，它随电子-LO声子的耦合强度和库仑束缚势的增大而增大，当电子-LO声子的耦合强度和库仑束缚势取某一定值时随阱宽的增大而增大．
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| 关 键 词： | 量子阱 束缚光学极化子 基态能量 线性组合算符 |
| 文章编号： | 1671-0185(2005)05-0495-06 |
| 修稿时间： | 2005年6月20日 |
The Bound Optical Polaron in a Quantum Well |
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| CHEN Wei-li,XIAO Jing-lin.The Bound Optical Polaron in a Quantum Well[J].Journal of Inner Mongolia University for the Nationalities(Natural Sciences),2005,20(5):495-500. |
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| Authors: | CHEN Wei-li XIAO Jing-lin |
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| Abstract: | In the paper,the properties of the strong-and weak-coupling bound optical polaron in quantum well are studied using linear combination operator and unitary transformation methods.The variational relation of the ground-state energy of the bound optical polaron in quantum well with the Coulomb bound potential,the electron-LO phonon coupling strength and the well-width is derived.The results of numerical calculation show that the ground-state energy is different because of different values of the electron-phonon coupling strength and the Coulomb bound potential,which will increase with increasing the electron-phonon coupling strength and the Coulomb bound potential;when the electron-phonon coupling strength and the Coulomb bound potential take a certain value,the ground-state energy will increase with increasing the well-width. |
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| Keywords: | Quantum well Bound optical polaron Ground-state energy Linear combination operator |
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