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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抜粋

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.

元の言語英語
記事番号057201
ジャーナルPhysical Review Letters
108
発行部数5
DOI
出版物ステータス出版済み - 1 30 2012

    フィンガープリント

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

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