【摘要】 本文研究压电晶体中强耦合激子的性质.采用线性组合算符和一种简单的幺正变换,得到了强耦合情形的压电激子基态的有效哈密顿量,激子的自能表示为耦合参数α的降幂级数,其首项为一次项.电子-空穴间通过声子作用诱生的作用势与耦合参数、声速等有关.更多还原

【Abstract】 In this paper, some properties of a strong-coupling exciton in piezoelectric crystal are studied. An effective Hamiltanian of the exciton is obtained by the method of a linear-combination operator and a simple unitary transformation. The self-energy could be written as a series in α-1, the first term being proportional to a, the coupling constant. The interaction potential induced by the interaction of the electron-hole with the phonons is related to coupling constant and sound speed etc.更多还原