JIAN Rong-hua, ZHAO Cui-lan. Properties of the Weak-coupling Magnetopolaron in a Semiconductor Quantum Well[J]. Chinese Journal of Luminescence, 2008,29(2): 215-220
JIAN Rong-hua, ZHAO Cui-lan. Properties of the Weak-coupling Magnetopolaron in a Semiconductor Quantum Well[J]. Chinese Journal of Luminescence, 2008,29(2): 215-220DOI:
Properties of the Weak-coupling Magnetopolaron in a Semiconductor Quantum Well
The properties of the weak-coupling magnetopolaron in semiconductor quantum well were studied by using the linear combination operator and a modified LLP variational method considering the electron spin. The mean number of phonons
the ground state energy of the weak-coupling magnetopolaron and the ratio(absolute value) of the electron spin energy to the ground state energy in an infinite quantum well were derived. Numerical results show that the mean number of phonons increases with enhancing the electron-LO-phonon coupling constant and the well width
and at last approaches to the limiting value of the bulk case; the ground state energy of the magnetopolaron becomes two branches from one branch due to the influence of the electron spin
which decreases with increasing the well width and electron-LO-phonon coupling constant
and it also increases with increasing the cyclotron resonance frequency.It depends on the cyclotron resonance frequency and the properties of the well material whether the effect of the electron spin energy in the quantum well can be neglected.
关键词
无限深量子阱磁极化子线性组合算符声子平均数电子自旋
Keywords
infinite quantum wellmagnetopolaronlinear combination operatormean number of phononselectron spin
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