Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates

S. Torigoe; Y. Ishimoto; Y. Aoishi; H. Murakawa; D. Matsumura; K. Yoshii; Y. Yoneda; Y. Nishihata; K. Kodama; K. Tomiyasu; K. Ikeda; H. Nakao; Yoshio Nogami; Naoshi Ikeda; T. Otomo; N. Hanasaki

doi:10.1103/PhysRevB.93.085109

Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates

S. Torigoe, Y. Ishimoto, Y. Aoishi, H. Murakawa, D. Matsumura, K. Yoshii, Y. Yoneda, Y. Nishihata, K. Kodama, K. Tomiyasu, K. Ikeda, H. Nakao, Yoshio Nogami, Naoshi Ikeda, T. Otomo, N. Hanasaki

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

We observed all-in type Nb tetrahedral displacement in nonmagnetic pyrochlore niobates A2Nb2O7(A=Nd0.5Ca0.5 and Y0.5Ca0.5) through the analysis of the neutron pair distribution function and the extended x-ray absorption function spectroscopy. The all-in type Nb tetrahedral displacement, which has the character of a charge singlet state, is driven by the formation of the bonding orbital. The diffuse scattering in the x-ray diffraction, which has the resonant component in the Nb L3 edge, indicates that the all-in type Nb tetrahedral displacement has the periodicity with its short-range correlation.

Original language	English
Article number	085109
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	93
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.93.085109
Publication status	Published - Feb 4 2016

ASJC Scopus subject areas

Condensed Matter Physics
Electronic, Optical and Magnetic Materials

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Torigoe, S., Ishimoto, Y., Aoishi, Y., Murakawa, H., Matsumura, D., Yoshii, K., Yoneda, Y., Nishihata, Y., Kodama, K., Tomiyasu, K., Ikeda, K., Nakao, H., Nogami, Y., Ikeda, N., Otomo, T., & Hanasaki, N. (2016). Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates. Physical Review B - Condensed Matter and Materials Physics, 93(8), [085109]. https://doi.org/10.1103/PhysRevB.93.085109

Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates. / Torigoe, S.; Ishimoto, Y.; Aoishi, Y.; Murakawa, H.; Matsumura, D.; Yoshii, K.; Yoneda, Y.; Nishihata, Y.; Kodama, K.; Tomiyasu, K.; Ikeda, K.; Nakao, H.; Nogami, Yoshio ; Ikeda, Naoshi; Otomo, T.; Hanasaki, N.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 93, No. 8, 085109, 04.02.2016.

Research output: Contribution to journal › Article

Torigoe, S, Ishimoto, Y, Aoishi, Y, Murakawa, H, Matsumura, D, Yoshii, K, Yoneda, Y, Nishihata, Y, Kodama, K, Tomiyasu, K, Ikeda, K, Nakao, H, Nogami, Y , Ikeda, N, Otomo, T & Hanasaki, N 2016, 'Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates', Physical Review B - Condensed Matter and Materials Physics, vol. 93, no. 8, 085109. https://doi.org/10.1103/PhysRevB.93.085109

Torigoe, S. ; Ishimoto, Y. ; Aoishi, Y. ; Murakawa, H. ; Matsumura, D. ; Yoshii, K. ; Yoneda, Y. ; Nishihata, Y. ; Kodama, K. ; Tomiyasu, K. ; Ikeda, K. ; Nakao, H. ; Nogami, Yoshio ; Ikeda, Naoshi ; Otomo, T. ; Hanasaki, N. / Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates. In: Physical Review B - Condensed Matter and Materials Physics. 2016 ; Vol. 93, No. 8.

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abstract = "We observed all-in type Nb tetrahedral displacement in nonmagnetic pyrochlore niobates A2Nb2O7(A=Nd0.5Ca0.5 and Y0.5Ca0.5) through the analysis of the neutron pair distribution function and the extended x-ray absorption function spectroscopy. The all-in type Nb tetrahedral displacement, which has the character of a charge singlet state, is driven by the formation of the bonding orbital. The diffuse scattering in the x-ray diffraction, which has the resonant component in the Nb L3 edge, indicates that the all-in type Nb tetrahedral displacement has the periodicity with its short-range correlation.",

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AU - Torigoe, S.

AU - Ishimoto, Y.

AU - Aoishi, Y.

AU - Murakawa, H.

AU - Matsumura, D.

AU - Yoshii, K.

AU - Yoneda, Y.

AU - Nishihata, Y.

AU - Kodama, K.

AU - Tomiyasu, K.

AU - Ikeda, K.

AU - Nakao, H.

AU - Nogami, Yoshio

AU - Ikeda, Naoshi

AU - Otomo, T.

AU - Hanasaki, N.

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AB - We observed all-in type Nb tetrahedral displacement in nonmagnetic pyrochlore niobates A2Nb2O7(A=Nd0.5Ca0.5 and Y0.5Ca0.5) through the analysis of the neutron pair distribution function and the extended x-ray absorption function spectroscopy. The all-in type Nb tetrahedral displacement, which has the character of a charge singlet state, is driven by the formation of the bonding orbital. The diffuse scattering in the x-ray diffraction, which has the resonant component in the Nb L3 edge, indicates that the all-in type Nb tetrahedral displacement has the periodicity with its short-range correlation.

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