Chinese Physics C > 2009, Vol. 33 > Issue(11): 991-995 DOI: 10.1088/1674-1137/33/11/012

Fine structure of K₃C₆₀photoionization cross-section oscillations

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The synchrotron radiation angle-resolved photoemission data of K₃C₆₀single 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 K₃C₆₀afford 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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LI Hong-Nian, YING Li-Jian, NI Jing-Fu, LI Gang, WANG Peng, KURASH Ibrahim, QIAN Hai-Jie and Fine structure of K ₃C ₆₀photoionization cross-section oscillations[J]. Chinese Physics C, 2009, 33(11): 991-995. doi: 10.1088/1674-1137/33/11/012

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Received: 2008-12-18
Revised: 2009-03-31

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Fine structure of K₃C₆₀photoionization cross-section oscillations

Corresponding author:LI Hong-Nian,

Received Date:2008-12-18

Accepted Date:2009-03-31

Available Online:2009-11-05

Abstract:

The synchrotron radiation angle-resolved photoemission data of K₃C₆₀single 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 K₃C₆₀afford 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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Fine structure of K₃C₆₀photoionization cross-section oscillations

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