Electronic ground state of Ni 2 +

Research output: Contribution to journalArticle


The Φ9/24 ground state of the Ni2+ diatomic molecular cation is determined experimentally from temperature and magnetic-field-dependent x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap, where an electronic and rotational temperature of 7.4±0.2 K was reached by buffer gas cooling of the molecular ion. The contribution of the spin dipole operator to the x-ray magnetic circular dichroism spin sum rule amounts to 7Tz=0.17±0.06μB per atom, approximately 11% of the spin magnetic moment. We find that, in general, homonuclear diatomic molecular cations of 3d transition metals seem to adopt maximum spin magnetic moments in their electronic ground states.


  • V. Zamudio-Bayer
  • R. Lindblad
  • C. Bülow
  • G. Leistner
  • A. Terasaki
  • B. V. Issendorff
  • J. T. Lau
External organisations
  • Helmholtz-Zentrum Berlin for Materials and Energy
  • Albert-Ludwigs University Freiburg
  • Toyota Technological Institute
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry
Original languageEnglish
Article number194302
JournalJournal of Chemical Physics
Issue number19
Publication statusPublished - 2016 Nov 21
Publication categoryResearch