对称量子阱中电子─界面声子相互作用对极化子性质的影响

采用Ｈａｇａ方法，对量子阱中极化子的有效质量和自陷能进行了研究。考虑到量子阱中电子波函数的束缚和界面声子的影响，计算了不同支声子与电子相互作用对自陷能的贡献，讨论了极化子的有效质量和自陷能随量子阱宽度的变化关系，进一步说明了量子阱的尺度和界面声子的重要性。

Effect of Electron-Interface-Phonon Interactions on Polaron's Properties in Symmetric Quantum Well

The effective mass and the self-trapping energy of the polaron in symmetric quantum well arestudied by means of Haga's method. In consideration of the confinement of the wave function ofan electron in quantum well and the effect of the interface phonon on the electron,the contribu-tion of various branches of phonons interacting with the electron on polaron's self-trapping ener-gy is calculated the change of the effective mass and the self-trapping energy of polaron changingwith the well's width is discussed. Moreover, the size effect of the quantum well and the impor-tance of the interface phonon are shown.