论文标题
超快的两电子轨道交换在li，是由Attosond脉冲引发的
Ultrafast Two-electron Orbital Swap in Li Initiated by Attosecond pulses
论文作者
论文摘要
通过LI的两光子顺序双电离发现了超快两电子轨道交换的通用机制。通过吸收EUV光子，将Li的$ 1s $电子电离后，位于两个不同壳上的其他两个结合电子具有平行或反平行的自旋方向。在后一种情况下，这两个电子在单线和三胞胎状态的叠加中具有不同的能量，形成了量子节拍，并产生了两百个轨道的两电子轨道交换，并以数百个attoseconds的形式产生。轨道互换机制可用于通过构想Attsond-Pump Attsont-Probe策略来操纵光电子对的自旋极化，从而用作控制旋转旋转旋转的多电体超快动力学的旋钮。
A universal mechanism of ultrafast two-electron orbital swap is discovered through two-photon sequential double ionization of Li. After a $1s$ electron in Li is ionized by absorbing an EUV photon, the other two bound electrons located on two different shells have either parallel or antiparallel spin orientations. In the latter case, these two electrons are in the superposition of the singlet and triplet states with different energies, forming a quantum beat and giving rise to the two-electron orbital swap with a period of several hundred attoseconds. The orbital swap mechanism can be used to manipulate the spin polarization of photoelectron pairs by conceiving the attosecond-pump attosecond-probe strategy, and thus serves as a knob to control spin-resolved multielectron ultrafast dynamics.
