Valence-band structure of organic radical p-CF3PNN investigated by angle-resolved photoemission spectroscopy

We study the electronic structure of p-trifluoromethylphenyl nitronyl nitroxide (p-CF3PNN), which forms a one-dimensional alternating antiferromagnetic chain of molecules, using angle-resolved photoemission spectroscopy. A singly occupied molecular orbital (SOMO) is observed clearly at ∼ 2eV in the...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2018-05, Vol.536, p.664-666
Main Authors: Anzai, Hiroaki, Takakura, Ryosuke, Ono, Yusuke, Ishihara, Suzuna, Sato, Hitoshi, Namatame, Hirofumi, Taniguchi, Masaki, Matsui, Toshiyuki, Noguchi, Satoru, Hosokoshi, Yuko
Format: Article
Language:English
Subjects:
Electronic structure
Organic radical molecule
Photoemission spectroscopy
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Summary:We study the electronic structure of p-trifluoromethylphenyl nitronyl nitroxide (p-CF3PNN), which forms a one-dimensional alternating antiferromagnetic chain of molecules, using angle-resolved photoemission spectroscopy. A singly occupied molecular orbital (SOMO) is observed clearly at ∼ 2eV in the valence-band spectra. The small band gap and the overlap between the SOMO orbitals in the NO groups are associated with the antiferromagnetic interaction between neighboring spins.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2017.10.033