Demishev S.V.1,2, Sluchanko N.E.1, Weckhuysen L.3, Moshchalkov V.V.3, Ohta H.4,2, Okubo S.4, Oshima Y.5, Spitsina N.G.6
1Low Temperatures Laboratory, General Physics Institute, Russian Academy of Sciences, Moscow, Russia
2Venture Business Laboratory, Kobe University, Rokkodai, Nada, Kobe 657--, Japan
3Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Heverlee, Belgium
4Molecular Photoscience Research Center and Department of Physics, Kobe University, Rokkodai, Nada, Kobe 657--, Japan
5Graduate School of Science and Technology, Kobe University, Rokkodai, Nada, Kobe 657--, Japan
6Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
Email: demis@lt.gpi.ru
Выставление онлайн: 17 февраля 2002 г.
Magnetization study of the C60·TMTSF· 2CS2 molecular complex in magnetic field up to 47 T for the temperature range 1.8-300 K and ESR specrtoscopy of the molecular complex (ET)2C60 at T=1.8 for the frequency range 60-90 GHz in magnetic field up to 32 T provide experimental evidence that a paramagnetic centers with the reduced g-factor values g<1 control magnetic properties of these solids. A model is suggested where the renormalisation of the g-factor value is due to dynamic Jahn-Teller effect on the of the negative C60 ions which appear as defects in crystalline structure with a weak charge transfer. This work have been supported by the Programmes of the Russian Ministry of Science and Technology "Fullerenes and Atomic Clusters", "Physics of Microwaves", "Fundamental Spectroscopy" and INTAS (grant N 00-807).
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