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Theory of vibronic optical spectra of impurity centers with violation of the Condon approximation

机译:违反Condon近似的杂质中心的振动光谱理论

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Expressions for non-Condon generating functions of absorption and luminescence of optical centers in crystals at zero temperature have been obtained in the adiabatic approximation. A solution to the Schr?dinger equation for an electronic subsystem has been considered to the first order of the perturbation theory for a vibronic interaction linear in normal coordinates of the vibrational subsystem. The non-Condon form function of the optical transition has been obtained in the form of a convolution operator acting on the normalized Condon form function. It has been proved that, if the optical transition is forbidden in the Condon approximation due to symmetry, the non-Condon form function does not contain a zero-phonon line and the non-Condon form functions of absorption and luminescence are symmetric.
机译:在绝热近似中,已经获得了在零温度下晶体中光学中心吸收和发光的非密码子生成函数的表达式。对于电子子系统的Schr?dinger方程的解,已经考虑到在振动子系统的法线坐标中的线性相互作用的扰动理论的一阶扰动理论。光学跃迁的非康登形式函数已经以作用在归一化的康登形式函数上的卷积算子的形式获得。已经证明,如果由于对称而在康登近似中禁止光学跃迁,则非康登形式的函数不包含零声子线,并且吸收和发光的非康登形式的函数是对称的。

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