Large orbital magnetic moments of small, free cobalt cluster ions Co+ n with n ≤ 9

V. Zamudio-Bayer, K. Hirsch, A. Langenberg, A. Ławicki, Akira Terasaki, B. Von Issendorff, J. T. Lau

Research output: Contribution to journalArticle

Abstract

The size dependent electronic structure and separate spin and orbital magnetic moments of free Co+ n (n = 4.9) cluster ions have been investigated by x-ray absorption and x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap. A very large orbital magnetic moment of 1.4 0.1 μB per atom was determined for Co+5 , which is one order of magnitude larger than in the bulk metal. Large orbital magnetic moments per atom of .1 μB were also found for Co+4 , Co+6 , and Co+8 . The orbital contribution to the total magnetic moment shows a nonmonotonic cluster size dependence: The orbital contribution increases from a local minimum at n = 2 to a local maximum at n = 5 and then decreases with increasing cluster size. The 3d spin magnetic moment per atom is nearly constant and is solely defined by the number of 3d holes which shows that the 3d majority spin states are fully occupied, that is, 3d hole spin polarization is 100%.

Original languageEnglish
Article number464002
JournalJournal of Physics Condensed Matter
Volume30
Issue number46
DOIs
Publication statusPublished - Oct 30 2018

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Cobalt
Magnetic moments
cobalt
magnetic moments
Ions
orbitals
ions
Atoms
Circular dichroism spectroscopy
atoms
X rays
Spin polarization
x ray absorption
Cryogenics
dichroism
cryogenics
Electronic structure
Metals
electronic structure
polarization

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Zamudio-Bayer, V., Hirsch, K., Langenberg, A., Ławicki, A., Terasaki, A., Von Issendorff, B., & Lau, J. T. (2018). Large orbital magnetic moments of small, free cobalt cluster ions Co+ n with n ≤ 9. Journal of Physics Condensed Matter, 30(46), [464002]. https://doi.org/10.1088/1361-648X/aae54a

Large orbital magnetic moments of small, free cobalt cluster ions Co+ n with n ≤ 9. / Zamudio-Bayer, V.; Hirsch, K.; Langenberg, A.; Ławicki, A.; Terasaki, Akira; Von Issendorff, B.; Lau, J. T.

In: Journal of Physics Condensed Matter, Vol. 30, No. 46, 464002, 30.10.2018.

Research output: Contribution to journalArticle

Zamudio-Bayer, V, Hirsch, K, Langenberg, A, Ławicki, A, Terasaki, A, Von Issendorff, B & Lau, JT 2018, 'Large orbital magnetic moments of small, free cobalt cluster ions Co+ n with n ≤ 9', Journal of Physics Condensed Matter, vol. 30, no. 46, 464002. https://doi.org/10.1088/1361-648X/aae54a
Zamudio-Bayer, V. ; Hirsch, K. ; Langenberg, A. ; Ławicki, A. ; Terasaki, Akira ; Von Issendorff, B. ; Lau, J. T. / Large orbital magnetic moments of small, free cobalt cluster ions Co+ n with n ≤ 9. In: Journal of Physics Condensed Matter. 2018 ; Vol. 30, No. 46.
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AU - Lau, J. T.

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