论文标题
关于在振动耦合效应下的电子环电流的产生
On the Generation of Electronic Ring Currents under Vibronic Coupling Effects
论文作者
论文摘要
我们研究了使用圆极化光在非绝热耦合存在下的电子环电流的产生。为此，我们引入了一个可解决的模型，该模型由电子和围绕公共中心旋转并进行相互库仑相互作用的核组成。该模型的简单性使电子环电流的非平凡性能在与核坐标的情况下的非平地性特性相同，并可以透明地表征各种限制情况。使用该模型，我们表明，即使系统的单个$ e $ e否特征态支持电流，振动耦合效果即使振动耦合效应也起着至关重要的作用。退化本征的最大电流取决于非绝热相互作用的强度。在大核到电子质量的极限中，在该质量上，出现的近刺象近似变得精确，恒定环电流和时间平均的振荡电流必然会消失。
We study the generation of electronic ring currents in the presence of nonadiabatic coupling using circularly polarized light. For this, we introduce a solvable model consisting of an electron and a nucleus rotating around a common center and subject to their mutual Coulomb interaction. The simplicity of the model brings to the forefront the non-trivial properties of electronic ring currents in the presence of coupling to the nuclear coordinates and enables the characterization of various limiting situations transparently. Employing this model, we show that vibronic coupling effects play a crucial role even when a single $E$ degenerate eigenstate of the system supports the current. The maximum current of a degenerate eigenstate depends on the strength of the nonadiabatic interactions. In the limit of large nuclear to electronic masses, in which the Born-Oppenheimer approximation becomes exact, constant ring currents and time-averaged oscillatory currents necessarily vanish.
