首页> 中文期刊> 《原子与分子物理学报》 >电场和温度对量子线中强耦合束缚极化子性质的影响

电场和温度对量子线中强耦合束缚极化子性质的影响

         

摘要

采用线性组合算符和幺正变换相结合方法研究了电场和温度对量子线中强耦合束缚极化子性质的影响。计算了在电场和温度影响下抛物量子线中强耦合束缚极化子的基态能量、平均声子数和振动频率。数值计算结果表明:束缚极化子的基态能量随约束强度、库仑束缚势和电场强度的增大而逐渐增大;平均声子数随温度、耦合强度的增大呈现递增关系,随库仑束缚势的加大呈现递减关系;振动频率随耦合强度和温度的增大而增大,随库仑束缚势的减小而增大。%The influences of electric field and temperature on properties of strong-coupling bound polaron in parabolic quantum wires are studied by using of the linear combination operator and the unitary transformation methods. The ground state energy, the mean number of phonon and the vibrational frequency were calculated. The numerical results show that the ground state energy increases with the increasing Coulomb bound potential and electric field. The mean number of phonon is a increasing function of the temperature and the confinement strength, and it is a decreasing function of the Coulomb bound potential. The variation frequency increases with the increasing of electron-phonon coupling strength and temperature. However, it decreases with increasing the Coulomb bound potential.

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