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Condensed Matter > Strongly Correlated Electrons

arXiv:0709.2274 (cond-mat)
[Submitted on 14 Sep 2007]

Title:Quadrupolar Order and Structural Phase Transition in DyB4 with Geometrical Frustration

Authors:Daisuke Okuyama, Takeshi Matsumura, Hironori Nakao, Youichi Murakami
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Abstract: Structural phase transition accompanying with quadrupolar ordering in DyB4 with Shastry-Sutherland type geometrical frustration has been studied by X-ray diffraction. Previous study [D. Okuyama et al.: J. Phys. Soc. Jpn. 74 (2005) 2434.] using resonant X-ray scattering revealed short-range ordering of the Ozx-type quadrupolar moments and the c-plane component of the magnetic moments in addition to long-range ordering of the c-axis component of the magnetic moments. The present report focuses on the lattice distortion below the quadrupolar ordering temperature at TN2=12.7 K. The (0 0 l=integer) fundamental lattice reflection splits into four peaks along the h and k directions and the (h=even 0 0) reflection becomes broad along the l direction. This indicates that a structural transition from tetragonal to monoclinic takes place below TN2 together with the ordering of the quadrupolar moments.
Comments: 3 pages, 4 figures, the Proceedings of ASR-WYP-2005
Subjects: Strongly Correlated Electrons (cond-mat.str-el)
Cite as: arXiv:0709.2274 [cond-mat.str-el]
  (or arXiv:0709.2274v1 [cond-mat.str-el] for this version)
  https://doi.org/10.48550/arXiv.0709.2274
Journal reference: J. Phys. Soc. Jpn 75 (2006) Suppl., p. 198

Submission history

From: Daisuke Okuyama [view email]
[v1] Fri, 14 Sep 2007 12:21:29 UTC (215 KB)
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