Inelastic neutron scattering study on low-energy excitations of the heavy-fermion superconductor PrOs4Sb12

K. Kuwahara; K. Iwasa; M. Kohgi; K. Kaneko; N. Metoki; S. Raymond; M. A. Méasson; J. Flouquet; H. Sugawara; Y. Aoki; H. Sato

doi:10.1016/j.physb.2006.05.109

Inelastic neutron scattering study on low-energy excitations of the heavy-fermion superconductor PrOs₄Sb₁₂

K. Kuwahara, K. Iwasa, M. Kohgi, K. Kaneko, N. Metoki, S. Raymond, M. A. Méasson, J. Flouquet, H. Sugawara, Y. Aoki, H. Sato

SCI - Physics

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

2 Citations (Scopus)

Abstract

Low-energy magnetic excitations in single crystals of the heavy-fermion superconductor PrOs₄Sb₁₂ have been studied by inelastic neutron scattering. The clear softening of excitations at a wave vector Q = (1, 0, 0), which is the same as the modulation vector of the field-induced antiferro-quadrupolar ordering, and the intensity analyses of excitations directly evidence that the nonmagnetic quadrupolar fluctuations are dominant in this system. Furthermore, the narrowing of the linewidths of the excitations in the superconducting phase indicates the close connection between the superconductivity and the excitations. The preliminary data under magnetic fields are also presented.

Original language	English
Pages (from-to)	82-84
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	385-386 I
DOIs	https://doi.org/10.1016/j.physb.2006.05.109
Publication status	Published - 2006 Nov 27

Keywords

Heavy-fermion
Quadrupolar fluctuations
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Inelastic neutron scattering study on low-energy excitations of the heavy-fermion superconductor PrOs₄Sb₁₂. / Kuwahara, K.; Iwasa, K.; Kohgi, M.; Kaneko, K.; Metoki, N.; Raymond, S.; Méasson, M. A.; Flouquet, J.; Sugawara, H.; Aoki, Y.; Sato, H.

In: Physica B: Condensed Matter, Vol. 385-386 I, 27.11.2006, p. 82-84.

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

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title = "Inelastic neutron scattering study on low-energy excitations of the heavy-fermion superconductor PrOs4Sb12",

abstract = "Low-energy magnetic excitations in single crystals of the heavy-fermion superconductor PrOs4Sb12 have been studied by inelastic neutron scattering. The clear softening of excitations at a wave vector Q = (1, 0, 0), which is the same as the modulation vector of the field-induced antiferro-quadrupolar ordering, and the intensity analyses of excitations directly evidence that the nonmagnetic quadrupolar fluctuations are dominant in this system. Furthermore, the narrowing of the linewidths of the excitations in the superconducting phase indicates the close connection between the superconductivity and the excitations. The preliminary data under magnetic fields are also presented.",

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AU - Kuwahara, K.

AU - Iwasa, K.

AU - Kohgi, M.

AU - Kaneko, K.

AU - Metoki, N.

AU - Raymond, S.

AU - Méasson, M. A.

AU - Flouquet, J.

AU - Sugawara, H.

AU - Aoki, Y.

AU - Sato, H.

PY - 2006/11/27

Y1 - 2006/11/27

N2 - Low-energy magnetic excitations in single crystals of the heavy-fermion superconductor PrOs4Sb12 have been studied by inelastic neutron scattering. The clear softening of excitations at a wave vector Q = (1, 0, 0), which is the same as the modulation vector of the field-induced antiferro-quadrupolar ordering, and the intensity analyses of excitations directly evidence that the nonmagnetic quadrupolar fluctuations are dominant in this system. Furthermore, the narrowing of the linewidths of the excitations in the superconducting phase indicates the close connection between the superconductivity and the excitations. The preliminary data under magnetic fields are also presented.

AB - Low-energy magnetic excitations in single crystals of the heavy-fermion superconductor PrOs4Sb12 have been studied by inelastic neutron scattering. The clear softening of excitations at a wave vector Q = (1, 0, 0), which is the same as the modulation vector of the field-induced antiferro-quadrupolar ordering, and the intensity analyses of excitations directly evidence that the nonmagnetic quadrupolar fluctuations are dominant in this system. Furthermore, the narrowing of the linewidths of the excitations in the superconducting phase indicates the close connection between the superconductivity and the excitations. The preliminary data under magnetic fields are also presented.

KW - Heavy-fermion

KW - Quadrupolar fluctuations

KW - Superconductivity

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