CAJ | 학술논문

研究了库仑场中抛物量子点中束缚极化子的性质.采用线性组合算符和微扰法,导出了量子点中束缚极化子的基态能量.在计及电子在反冲效应中发射和吸收不同波矢的声子之间的相互作用下,研究了其对量子点中束缚极化子的基态能量的影响.数值计算表明:当考虑声子之间的相互作用时,量子点中束缚极化子的基态能量随量子点的有效受限长度的减小而迅速增大.当l0＞1.0时,必须考虑声子之间的相互作用对基态能量的影响.
연구료고륜장중포물양자점중속박겁화자적성질.채용선성조합산부화미우법,도출료양자점중속박겁화자적기태능량.재계급전자재반충효응중발사화흡수불동파시적성자지간적상호작용하,연구료기대양자점중속박겁화자적기태능량적영향.수치계산표명:당고필성자지간적상호작용시,양자점중속박겁화자적기태능량수양자점적유효수한장도적감소이신속증대.당l0＞1.0시,필수고필성자지간적상호작용대기태능량적영향.
The properties of a bound polaron in a parabolic quantum dot with weak electron-LO-phonon coupling under a Coulomb field are studied.The ground state energy of the bound polaron is derived by using a linear combination operator and the perturbation method.The influence of the interaction between phonons with different wave vectors in the recoil process on the ground state energy of the bound polaron is discussed.Numerical calculations are performed,and the results show that the ground state energy increases significantly as the effective confinement length of the quantum dot decreases,considering of the interaction between phonons.When l0＞1.0,the influence of the interaction between phonons on the ground state energy cannot be ignored.