标题： 手性振动如何驱动分子旋转 显示英文标题

标题： How chiral vibrations drive molecular rotation

摘要： 我们分析了两种简单的平面分子模型：具有D3对称性的离子分子和具有D6对称性的共价分子。 这两种对称性都允许手性分子轨道和以Jahn-Teller方式相互耦合的正常模式存在，且在具有伪角动量生成元的U(1)对称性下保持不变。 在离子分子中，手性模式具有电偶极矩但缺乏物理角动量；而在共价分子中，情况则相反。 尽管如此，我们证明在这两种情况下，手性模式都可以通过圆偏振光激发，并随后诱导整个分子的旋转运动。 我们进一步讨论了我们的发现扩展到晶体块状样品情况下的潜力。 显示英文摘要

摘要： We analyze two simple model planar molecules: an ionic molecule with D3 symmetry and a covalent molecule with D6 symmetry. Both symmetries allow the existence of chiral molecular orbitals and normal modes that are coupled to each other in a Jahn-Teller manner, invariant under U (1) symmetry with generator a pseudo angular momentum. In the ionic molecule, the chiral mode possesses an electric dipole but lacks physical angular momentum, whereas, in the covalent molecule, the situation is reversed. In spite of that, we show that in both cases the chiral modes can be excited by a circularly polarized light and are subsequently able to induce rotational motion of the entire molecule. We further discuss the potential extension of our findings to the case of crystalline bulk samples.