Magnetic potassium clusters in a nanographite host system.
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.
Takai
Kazuyuki
K
Department of Chemistry, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro, Tokyo, Japan. ktakai@chem.titech.ac.jp
Eto
Soichiro
S
Inaguma
Masayasu
M
Enoki
Toshiaki
T
Ogata
Hironori
H
Tokita
Masatoshi
M
Watanabe
Junji
J