PHOTOINDUCED PHASE TRANSITION OF A SPIN-CROSSOVER COMPLEX STUDIED WITH THE COMBINATION OF SR AND LASER

Kazutoshi Takahashi (), Masao Kamada, Yo-Ichiro Doi, Kazutoshi Fukui, Takeshi Tayagaki and Koichiro Tanaka
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Kazutoshi Takahashi: UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
Masao Kamada: UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
Yo-Ichiro Doi: Faculty of Engineering, Fukui University, Fukui 910-8507, Japan
Kazutoshi Fukui: Faculty of Engineering, Fukui University, Fukui 910-8507, Japan
Takeshi Tayagaki: Department of Physics, Kyoto University, Kyoto 606-8205, Japan
Koichiro Tanaka: Department of Physics, Kyoto University, Kyoto 606-8205, Japan

Surface Review and Letters (SRL), 2002, vol. 09, issue 01, 319-323

Abstract: We have performed a photoemission study on an organometal spin-crossover complex,[Fe(2-pic)3]Cl2EtOH, using the combination of synchrotron radiation and laser. The core-level and valence-band photoemission spectra were measured for high-spin, low-spin, and photoinduced phases. The N 1s and valence-band spectra showed remarkable changes due to the photoinduced phase transition, indicating that the electron charge was transferred from nitrogen to iron at the photoinduced phase transitions. It was also found that the valence-band structure of the photoinduced phase is very different from that of the high-spin phase caused by the thermally induced phase transition.

Date: 2002
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DOI: 10.1142/S0218625X02002312

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