Magnetic Excitation in Artificially Designed Oxygen Molecule Magnet
- Resource Type
- Working Paper
- Authors
- Masuda, T.; Takamizawa, S.; Hirota, K.; Ohba, M.; Kitagawa, S.
- Source
- Subject
- Condensed Matter - Strongly Correlated Electrons
Condensed Matter - Materials Science
- Language
We performed inelastic neutron scattering experiment to study magnetic excitation of O$_2$ molecules adsorbed in microporous compound. The dispersionless excitation with characteristic intensity modulation is observed at $\hbar \omega = 7.8$ meV at low temperature. The neutron cross section is explained by spin dimer model with intradimer distance of 3.1 \AA . Anomalous behaviour in the temperature dependence is discussed in the context of enhanced magnetoelasticity in the soft framework of O$_2$ molecule.
Comment: 4 pages, 5 figures, to be published in Journal of Physical Society of Japan