Charge ordering in Eu4As3

Akira Ochiai, Yuji Shima, Makoto Shirakawa

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

The one-dimensional magnetic chain model clarified the unusual properties of Yb4As3. However, there are still unexplained problems. The Madelung energy calculation pointed out that the actual arrangement of Yb3+ and Yb2+ in the charge-ordered state, which forms the one-dimensional Yb3+ chains, is not a lowest energy state. To examine the role of the orbital moment and the exchange interaction, which are candidates dominating the charge ordering, we prepared a single crystal of Eu4As3, in which only spin moment is dominant. The measurements of X-ray diffraction, transport properties and susceptibility revealed that the charge ordering in Eu4As3 is very similar to that in Yb4As3, however, an appearance of ferromagnetism in Eu4As3 is a striking contrast to Yb4As3. These results may indicate that the charge-ordering formation is subject to neither orbital moment nor exchange interaction.

Original languageEnglish
Pages (from-to)362-364
Number of pages3
JournalPhysica B: Condensed Matter
Volume312-313
DOIs
Publication statusPublished - 2002 Mar 1
EventInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
Duration: 2002 Aug 62002 Aug 6

Keywords

  • Charge ordering
  • EuAs
  • SmBi
  • YbAs

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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