Inelastic neutron scattering measurements in a quadrupolar ordering compound YbSb

A. Oyamada; K. Kuwahara; K. Ohoyama; K. Iwasa; M. Kohgi; S. Maegawa

doi:10.1016/j.jmmm.2006.10.167

Inelastic neutron scattering measurements in a quadrupolar ordering compound YbSb

A. Oyamada, K. Kuwahara, K. Ohoyama, K. Iwasa, M. Kohgi, S. Maegawa

SCI - Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Inelastic neutron scattering measurements were performed to study the excitation spectra of a quadrupolar ordering compound YbSb. We observed the three peaks (12.5, 17 and 21 meV) around Γ₆ - Γ₈ excitations far above the quadrupolar ordering temperature (T_Q). This result suggests that the magnetic excitations have a dispersion rather than the splitting of Γ₈ states at high temperatures. We also observed the strong q dependence in q scans at energy = 1 meV above T_Q. The observed q dependence above T_Q suggests that the theoretical approach beyond the molecular field approximation is required in order to understand the magnetic properties of Yb monopnictides.

Original language	English
Pages (from-to)	766-767
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.167
Publication status	Published - 2007 Mar 1

Keywords

Neutron scattering
Quadrupolar ordering
YbSb

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2006.10.167

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title = "Inelastic neutron scattering measurements in a quadrupolar ordering compound YbSb",

abstract = "Inelastic neutron scattering measurements were performed to study the excitation spectra of a quadrupolar ordering compound YbSb. We observed the three peaks (12.5, 17 and 21 meV) around Γ6 - Γ8 excitations far above the quadrupolar ordering temperature (TQ). This result suggests that the magnetic excitations have a dispersion rather than the splitting of Γ8 states at high temperatures. We also observed the strong q dependence in q scans at energy = 1 meV above TQ. The observed q dependence above TQ suggests that the theoretical approach beyond the molecular field approximation is required in order to understand the magnetic properties of Yb monopnictides.",

keywords = "Neutron scattering, Quadrupolar ordering, YbSb",

author = "A. Oyamada and K. Kuwahara and K. Ohoyama and K. Iwasa and M. Kohgi and S. Maegawa",

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TY - JOUR

T1 - Inelastic neutron scattering measurements in a quadrupolar ordering compound YbSb

AU - Oyamada, A.

AU - Kuwahara, K.

AU - Ohoyama, K.

AU - Iwasa, K.

AU - Kohgi, M.

AU - Maegawa, S.

PY - 2007/3/1

Y1 - 2007/3/1

N2 - Inelastic neutron scattering measurements were performed to study the excitation spectra of a quadrupolar ordering compound YbSb. We observed the three peaks (12.5, 17 and 21 meV) around Γ6 - Γ8 excitations far above the quadrupolar ordering temperature (TQ). This result suggests that the magnetic excitations have a dispersion rather than the splitting of Γ8 states at high temperatures. We also observed the strong q dependence in q scans at energy = 1 meV above TQ. The observed q dependence above TQ suggests that the theoretical approach beyond the molecular field approximation is required in order to understand the magnetic properties of Yb monopnictides.

AB - Inelastic neutron scattering measurements were performed to study the excitation spectra of a quadrupolar ordering compound YbSb. We observed the three peaks (12.5, 17 and 21 meV) around Γ6 - Γ8 excitations far above the quadrupolar ordering temperature (TQ). This result suggests that the magnetic excitations have a dispersion rather than the splitting of Γ8 states at high temperatures. We also observed the strong q dependence in q scans at energy = 1 meV above TQ. The observed q dependence above TQ suggests that the theoretical approach beyond the molecular field approximation is required in order to understand the magnetic properties of Yb monopnictides.

KW - Neutron scattering

KW - Quadrupolar ordering

KW - YbSb

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - 2 SUPPL. PART 1

ER -

Inelastic neutron scattering measurements in a quadrupolar ordering compound YbSb

Abstract

Keywords

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