title: Magnetic potassium clusters in a nanographite host system.
abstract: The magnetism and structure for potassium clusters physisorbed in nanographite-based nanoporous host are investigated. Potassium clusters are subjected to a slight charge transfer to a host nanographite and modify the magnetism of the edge-state spins of nanographite. The localized spins of 4s electrons in the potassium cluster interact with each other through a strong antiferromagnetic interaction. Finite size effect and structural disorder around the cluster surface are responsible for anomalous spin fluctuations in the magnetism.
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro, Tokyo, Japan. ktakai@chem.titech.ac.jp
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Takai
authors.forename: Soichiro
authors.initials: S
authors.lastname: Eto
authors.forename: Masayasu
authors.initials: M
authors.lastname: Inaguma
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Enoki
authors.forename: Hironori
authors.initials: H
authors.lastname: Ogata
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Tokita
authors.forename: Junji
authors.initials: J
authors.lastname: Watanabe