Fine structure of K3C60 photoionization cross-section oscillations

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LI Hong-Nian, YING Li-Jian, NI Jing-Fu, LI Gang, WANG Peng, KURASH Ibrahim, QIAN Hai-Jie and Fine structure of K3C60 photoionization cross-section oscillations[J]. Chinese Physics C, 2009, 33(11): 991-995. doi: 10.1088/1674-1137/33/11/012
LI Hong-Nian, YING Li-Jian, NI Jing-Fu, LI Gang, WANG Peng, KURASH Ibrahim, QIAN Hai-Jie and Fine structure of K3C60 photoionization cross-section oscillations[J]. Chinese Physics C, 2009, 33(11): 991-995.  doi: 10.1088/1674-1137/33/11/012 shu
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Received: 2008-12-18
Revised: 2009-03-31
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Fine structure of K3C60 photoionization cross-section oscillations

    Corresponding author: LI Hong-Nian,

Abstract: 

The synchrotron radiation angle-resolved photoemission data of K3C60 single crystal film are analyzed, aiming at the photoionization cross-sections of the LUMO, HOMO and HOMO-1 bands in low photon energy region (14.5—27.5 eV). Many fine structures of the HOMO/HOMO-1 intensity ratios are observed, which support the general validity of a quantum chemistry model. However, the experimental data and the theoretical results have some disagreement in the energy positions and magnitudes of the fine structures, and the disagreement is more outstanding than the case of pure C60. So the photoemission data of K3C60 afford valuable experimental reference to further theoretical developments. The LUMO cross-section data, which cannot be discussed with the quantum chemistry description due to strong solid state effects, are also reported for further studies.

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