Spin coupling and orbital angular momentum quenching in free iron clusters

M. Niemeyer, K. Hirsch, V. Zamudio-Bayer, A. Langenberg, M. Vogel, M. Kossick, C. Ebrecht, K. Egashira, A. Terasaki, T. Möller, B. V. Issendorff, J. T. Lau

研究成果: ジャーナルへの寄稿記事

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Magnetic spin and orbital moments of size-selected free iron cluster ions Fen+ (n=3-20) have been determined via x-ray magnetic circular dichroism spectroscopy. Iron atoms within the clusters exhibit ferromagnetic coupling except for Fe13+, where the central atom is coupled antiferromagnetically to the atoms in the surrounding shell. Even in very small clusters, the orbital magnetic moment is strongly quenched and reduced to 5%-25% of its atomic value while the spin magnetic moment remains at 60%-90%. This demonstrates that the formation of bonds quenches orbital angular momenta in homonuclear iron clusters already for coordination numbers much smaller than those of the bulk.

ジャーナルPhysical Review Letters
出版物ステータス出版済み - 1 30 2012


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


Niemeyer, M., Hirsch, K., Zamudio-Bayer, V., Langenberg, A., Vogel, M., Kossick, M., ... Lau, J. T. (2012). Spin coupling and orbital angular momentum quenching in free iron clusters. Physical Review Letters, 108(5), [057201]. https://doi.org/10.1103/PhysRevLett.108.057201