Geometrical Quadrupolar Frustration in DyB4

Ryuta Watanuki; Gou Sato; Kazuya Suzuki; Masaki Ishihara; Tatsuya Yanagisawa; Yuichi Nemoto; Terutaka Goto

doi:10.1143/jpsj.74.2169

Geometrical Quadrupolar Frustration in DyB₄

Ryuta Watanuki, Gou Sato, Kazuya Suzuki, Masaki Ishihara, Tatsuya Yanagisawa, Yuichi Nemoto, Terutaka Goto

著者情報

キーワード: DyB₄, quadrupole order, Shastry-Sutherland lattice, geometrical quadrupolar frustration, quadrupolar fluctuation

ジャーナル認証あり

2005 年 74 巻 8 号 p. 2169-2172

DOI https://doi.org/10.1143/jpsj.74.2169

詳細

抄録

Physical properties of DyB₄ have been studied by magnetization, specific heat, and ultrasonic measurements. The magnetic entropy change and ultrasonic properties in intermediate phase II indicate that the degeneracy of internal degrees of freedom is not fully lifted in spite of the formation of magnetic order. The ultrasonic attenuation and huge softening of C₄₄ in phase II suggest the existence of electric-quadrupolar (orbital) fluctuations of 4f-electrons. These unusual properties originate from a geometrical quadrupolar frustration.

責任著者(Corresponding author)

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