Krmnen团簇中的界面激子：电子亲合势在电子结构形成中的作用
Interface Excitons in Krmnen Clusters : The Role of Electron Affinity in the Formation of Electronic Structure
摘要：
本文用同步辐射荧光激发光谱研究了嵌在Ne_N团簇（1200<N<7500）中的小团簇Kr_m（m<150）电子结构的形成。电子激发态，分配给激子在Ne/Kr界面，1 i和1 'i观察。与最低自旋轨道分裂原子Kr 3 P1和1 P1态相关的吸收带最初出现，并且随着氪团簇尺寸m的增加而向较低能量移动。当团簇半径超过某一临界值时，谱中出现特征的体激子1 t和1't，R_cl>Delta_1i。氪团簇包括多达70个原子不表现出体吸收带。我们认为这是由于周围Ne原子的负电子亲和力导致界面激子渗透到Kr_m团簇体积中。从界面吸收带随团簇尺寸的能量位移估计出一个意想不到的大穿透深度delta_1i =7.0+/-0.1 A，这可以用客体和主体团簇的电子亲合势之间的相互作用来解释。
英文摘要：
The formation of the electronic structure of small Kr_m clusters (m<150) embedded inside Ne_N clusters (1200<N<7500) has been investigated with the help of fluorescence excitation spectroscopy using synchrotron radiation. Electronically excited states, assigned to excitons at the Ne/Kr interface, 1i and 1'i were observed. The absorption bands, which are related to the lowest spin-orbit split atomic Kr 3P1 and 1P1 states, initially appear and shift towards lower energy when the krypton cluster size m increases. The characteristic bulk 1t and 1't excitons appear in the spectra, when the cluster radius exceeds some critical value, R_cl>Delta_1i . Kr clusters comprising up to 70 atoms do not exhibit bulk absorption bands. We suggest that this is due to the penetration of the interface excitons into the Kr_m cluster volume, because of the negative electron affinity of surrounding Ne atoms. From the energy shift of the interface absorption bands with cluster size an unexpectedly large penetration depth of delta_1i =7.0+/-0.1 A is estimated, which can be explained by the interplay between the electron affinities of the guest and the host cluster.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
