首页> 外文期刊>Bulletin of the American Physical Society >APS -APS March Meeting 2017 - Event - Non-adiabatic simulations of terahertz manipulation of electronic excitations of Jahn-Teller active transition metal complexes using non-linear phononics.
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APS -APS March Meeting 2017 - Event - Non-adiabatic simulations of terahertz manipulation of electronic excitations of Jahn-Teller active transition metal complexes using non-linear phononics.

机译:APS -APS 2017年3月会议-事件-使用非线性声子学对Jahn-Teller活性过渡金属配合物的电子激发进行太赫兹操纵的非绝热模拟。

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Recent progress in laser technology has enabled the control of particular infra red (IR) active vibrational modes in molecules and solids. For cases when the activated IR modes couple to Raman active modes, it is possible to pump Jahn-Teller (JT) modes in compounds that where the electronic configuration is not JT active. Exciting the JT vibrational mode of transition metal complexes that are electronically JT active in the excited state, e.g. [Ni(H$_{2}$O)$_{6}$]$^{2+}$, facilitates a route to manipulate particular electronic excitations by enforcing a vibrational structure of the excited potential energy surface. We employ time-dependent density-functional theory in conjunction with Ehrenfest dynamics to simulate the process, describing ionic motion, external electromagnetic fields and evolution of the electronic wave-functions on the pico-second time-scale with realistic laser fluence.footnote{G. Kolesov emph{et al.} J. Chem. Theory Comput.,12, pp 466-476; doi: 10.1021/acs.jctc.5b00969 (2016)} The result sheds light on how coherent terahertz light influences the electronic degrees of freedom in open $d$-shell transition metal complexes.
机译:激光技术的最新进展使得能够控制分子和固体中的特定红外(IR)主动振动模式。对于激活的IR模式耦合到拉曼激活模式的情况,可以在电子配置不激活JT的化合物中泵送Jahn-Teller(JT)模式。令人兴奋的过渡金属络合物的JT振动模式,该金属在激发态下具有电子JT活性,例如[Ni(H $ _ {2} $ O)$ _ {6} $] $ ^ {2 +} $通过增强被激发的势能表面的振动结构,促进了操纵特定电子激发的途径。我们结合Ehrenfest动力学采用时变的密度泛函理论来模拟该过程,描述了皮秒级时的离子运动,外部电磁场和电子波函数的演化,并具有现实的激光注量。footnote{G 。科列索夫(英语:Kolesov emph){et al。}理论计算,12,466-476页; doi:10.1021 / acs.jctc.5b00969(2016)}结果揭示了相干的太赫兹光如何影响开放的$ d $-壳过渡金属络合物的电子自由度。

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