Full Picture of Valence Band Structure of Rubrene Single Crystals Probed by Angle-Resolved and Excitation-Energy-Dependent Photoelectron Spectroscopy
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概要
- 論文の詳細を見る
The valence band structure of rubrene single crystals was experimentally determined by high-resolution angle-resolved and excitation-energy-dependent photoelectron spectroscopy at room temperature. The energy position of the peak derived from the highest occupied molecular orbital did not depend on the excitation energy, reflecting an absence of energy dispersion along the surface normal direction. A two-dimensional valence band dispersion relation over the surface Brillouin zone obtained by angle-resolved photoemission to three critical points was reproduced excellently by a two-dimensional tight binding approximation. Highly anisotropic values of intermolecular transfer integrals to four adjacent molecules were obtained from the present results.
- 2012-11-25
著者
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Mase Kazuhiko
Institute For Solid State Physics The University Of Tokyo : Riken The Institute Of Physical And Chem
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Ishii Hisao
Center For Frontier Science Chiba University
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Nakayama Yasuo
Center for Frontier Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Okajima Toshihiro
Beamline Group, Kyushu Synchrotron Light Research Center (SAGA-LS), Tosu, Saga 841-0005, Japan
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Uragami Yuki
Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan
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Koswattage Kaveenga
Center for Frontier Science, Chiba University, Chiba 263-8522, Japan
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Yoshimura Daisuke
Beamline Group, Kyushu Synchrotron Light Research Center (SAGA-LS), Tosu, Saga 841-0005, Japan
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Setoyama Hiroyuki
Beamline Group, Kyushu Synchrotron Light Research Center (SAGA-LS), Tosu, Saga 841-0005, Japan
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Mase Kazuhiko
Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
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SETOYAMA Hiroyuki
Beamline Group, Kyushu Synchrotron Light Research Center (SAGA-LS)
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Machida Shin'ichi
Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan
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