Single-site effects of Pr and U ions doped in (, Y and La)

Morishita, Aoi; Matsuda, Kazuyuki; Wakabayashi, T.; Kawasaki, Ikuo; Tenya, Kenichi; Arima, Hiroshi

doi:10.1016/j.jmmm.2006.10.045

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…According to the analyses of the magnetic susceptibility, χ(T ), the most natural choice of the lowlying CEF scheme is Γ (1) 1 -Γ 2 , 37) which is common in the related materials, UPt 2 Si 2 , 19) PrRu 2 Si 2 38,39) and their dilute systems. 40) Note that this choice for the low-lying CEF scheme is also reached by the electronic structure computation combined with the dynamical mean-field approximation (Γ 1 and Γ 2 are reversed due to the hybridization effect). 25) A prominent feature of χ(T ) in URu 2 Si 2 as compared with the related materials is the strong anisotropy, namely, χ a (T ) shows the Van Vleck type almost T -independent behavior, while χ c (T ) exhibits the Curie-Weiss behavior at least below 300 K. The strong anisotropy is observed in the magnetization process as well.…”

Section: Selection Of Hidden Order Parameter Candidatementioning

confidence: 98%

On the Hidden Order in URu$_{2}$Si$_{2}$ --- Antiferro Hexadecapole Order and its Consequences

Kusunose,

Harima

2011

Preprint

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An antiferro ordering of an electric hexadecapole moment is discussed as a promising candidate for the long standing mystery of the hidden order phase in URu 2 Si 2 . Based on localized f -electron picture, we discuss the rationale of the selected multipole and the consequences of the antiferro hexadecapole order of xy(x 2 − y 2 ) symmetry. The mean-field solutions and the collective excitations from them explain reasonably significant experimental observations: the strong anisotropy in the magnetic susceptibility, characteristic behavior of pressure versus magnetic field or temperature phase diagrams, disappearance of inelastic neutron-scattering intensity out of the hidden order phase, and insensitiveness of the NQR frequency at Ru-sites upon ordering. A consistency with the strong anisotropy in the magnetic responses excludes all the multipoles in two-dimensional representations, such as (O yz , O zx ). The expected azimuthal angle dependences of the resonant X-ray scattering amplitude are given. The (x 2 −y 2 )-type antiferro quadrupole should be induced by an in-plane magnetic field along [110], which is reflected in the thermal expansion and the elastic constant of the transverse (c 11 − c 12 )/2 mode. The (x 2 − y 2 )-type [(xy)-type] antiferro quadrupole is also induced by applying the uniaxial stress along [110] direction [[100] direction]. A detection of these induced antiferro quadrupoles under the in-plane magnetic field or the uniaxial stress using the resonant X-ray scattering provides a direct redundant test for the proposed order parameter.

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Section: Selection Of Hidden Order Parameter Candidatementioning

confidence: 98%

On the Hidden Order in URu$_{2}$Si$_{2}$ --- Antiferro Hexadecapole Order and its Consequences

Kusunose,

Harima

2011

Preprint

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On the Hidden Order in URu₂Si₂ – Antiferro Hexadecapole Order and Its Consequences

Kusunose

Harima

2011

J. Phys. Soc. Jpn.

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Single-site effects of Pr and U ions doped in (, Y and La)

Cited by 2 publications

References 11 publications

On the Hidden Order in URu$_{2}$Si$_{2}$ --- Antiferro Hexadecapole Order and its Consequences

On the Hidden Order in URu$_{2}$Si$_{2}$ --- Antiferro Hexadecapole Order and its Consequences

On the Hidden Order in URu₂Si₂ – Antiferro Hexadecapole Order and Its Consequences

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Single-site effects of Pr and U ions doped in (, Y and La)

Cited by 2 publications

References 11 publications

On the Hidden Order in URu$_{2}$Si$_{2}$ --- Antiferro Hexadecapole Order and its Consequences

On the Hidden Order in URu$_{2}$Si$_{2}$ --- Antiferro Hexadecapole Order and its Consequences

On the Hidden Order in URu2Si2 – Antiferro Hexadecapole Order and Its Consequences

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On the Hidden Order in URu₂Si₂ – Antiferro Hexadecapole Order and Its Consequences