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 language | English |
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Pages (from-to) | 362-364 |
Number of pages | 3 |
Journal | Physica B: Condensed Matter |
Volume | 312-313 |
DOIs | |
Publication status | Published - 2002 Mar |
Event | International Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States Duration: 2002 Aug 6 → 2002 Aug 6 |
Keywords
- Charge ordering
- EuAs
- SmBi
- YbAs
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering