Observation of the antiferroquadrupolar order in DyB2C2 by resonant x-ray scattering

T. Matsumura; N. Oumi; K. Hirota; H. Nakao; Y. Murakami; Y. Wakabayashi; T. Arima; S. Ishihara; Y. Endoh

Observation of the antiferroquadrupolar order in DyB₂C₂ by resonant x-ray scattering

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

SCI - Physics

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32 Citations (Scopus)

Abstract

We have investigated the antiferroquadrupolar (AFQ) order in DyB₂C₂ by resonant x-ray scattering. X rays with energies near the L₃ absorption edge of Dy were employed. Superlattice peaks that correspond to three kinds of propagation vectors of (1 0 0), (1 0 1/2), and (0 0 1/2) were investigated in detail with polarization analyses. The experimental results are analyzed using a formalism of resonant x-ray scattering and a model of the AFQ order. The magnetic and quadrupolar scatterings are explained by the model satisfactorily. A detailed investigation of the critical behavior of the AFQ ordering is also reported. The critical exponent β is deduced to be 0.35, not far from the three-dimensional Heisenberg system. We have also succeeded in detecting the diffuse scattering above T_Q.

Original language	English
Article number	094420
Pages (from-to)	944201-9442011
Number of pages	8497811
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	9
Publication status	Published - 2002 Mar 1

Cite this

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abstract = "We have investigated the antiferroquadrupolar (AFQ) order in DyB2C2 by resonant x-ray scattering. X rays with energies near the L3 absorption edge of Dy were employed. Superlattice peaks that correspond to three kinds of propagation vectors of (1 0 0), (1 0 1/2), and (0 0 1/2) were investigated in detail with polarization analyses. The experimental results are analyzed using a formalism of resonant x-ray scattering and a model of the AFQ order. The magnetic and quadrupolar scatterings are explained by the model satisfactorily. A detailed investigation of the critical behavior of the AFQ ordering is also reported. The critical exponent β is deduced to be 0.35, not far from the three-dimensional Heisenberg system. We have also succeeded in detecting the diffuse scattering above TQ.",

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T1 - Observation of the antiferroquadrupolar order in DyB2C2 by resonant x-ray scattering

AU - Matsumura, T.

AU - Oumi, N.

AU - Hirota, K.

AU - Nakao, H.

AU - Murakami, Y.

AU - Wakabayashi, Y.

AU - Arima, T.

AU - Ishihara, S.

AU - Endoh, Y.

PY - 2002/3/1

Y1 - 2002/3/1

N2 - We have investigated the antiferroquadrupolar (AFQ) order in DyB2C2 by resonant x-ray scattering. X rays with energies near the L3 absorption edge of Dy were employed. Superlattice peaks that correspond to three kinds of propagation vectors of (1 0 0), (1 0 1/2), and (0 0 1/2) were investigated in detail with polarization analyses. The experimental results are analyzed using a formalism of resonant x-ray scattering and a model of the AFQ order. The magnetic and quadrupolar scatterings are explained by the model satisfactorily. A detailed investigation of the critical behavior of the AFQ ordering is also reported. The critical exponent β is deduced to be 0.35, not far from the three-dimensional Heisenberg system. We have also succeeded in detecting the diffuse scattering above TQ.

AB - We have investigated the antiferroquadrupolar (AFQ) order in DyB2C2 by resonant x-ray scattering. X rays with energies near the L3 absorption edge of Dy were employed. Superlattice peaks that correspond to three kinds of propagation vectors of (1 0 0), (1 0 1/2), and (0 0 1/2) were investigated in detail with polarization analyses. The experimental results are analyzed using a formalism of resonant x-ray scattering and a model of the AFQ order. The magnetic and quadrupolar scatterings are explained by the model satisfactorily. A detailed investigation of the critical behavior of the AFQ ordering is also reported. The critical exponent β is deduced to be 0.35, not far from the three-dimensional Heisenberg system. We have also succeeded in detecting the diffuse scattering above TQ.

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JF - Physical Review B - Condensed Matter and Materials Physics

IS - 9

M1 - 094420

ER -

Observation of the antiferroquadrupolar order in DyB₂C₂ by resonant x-ray scattering

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