Direct observation of antiferroquadrupolar ordering: Resonant x-ray scattering study of DyB2C2

K. Hirota, N. Oumi, T. Matsumura, H. Nakao, Y. Wakabayashi, Y. Murakami, Y. Endoh

Research output: Contribution to journalArticlepeer-review

165 Citations (Scopus)

Abstract

Antiferroquadrupolar (AFQ) ordering has been conjectured in several rare-earth compounds to explain their anomalous magnetic properties. No direct evidence for AFQ ordering, however, has been reported. Using the resonant x-ray scattering technique near the Dy LIII absorption edge, we have succeeded in observing the AFQ order parameter in DyB2C2 and analyzing the energy and polarization dependence. The much weaker coupling between the orbital degrees of freedom and the lattice in 4f electron systems than in 3d compounds makes them an ideal platform to study orbital interactions originating from electronic mechanisms.

Original languageEnglish
Pages (from-to)2706-2709
Number of pages4
JournalPhysical review letters
Volume84
Issue number12
DOIs
Publication statusPublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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