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

Observation of all-in type tetrahedral displacements in nonmagnetic pyrochlore niobates
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非磁性烧绿石铌酸盐全合型四面体位移的观测

DOI：
10.1103/physrevb.93.085109
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发表时间：
2016
期刊：
Phys. Rev. B
影响因子：
--
通讯作者：
and N. Hanasaki
and N. Hanasaki
中科院分区：
--
文献类型：
--
作者：
S. Torigoe;Y. Ishimoto;Y. Aoishi;H. Murakawa;D. Matsumura;K. Yoshii;Y. Yoneda;Y. Nishihata;K. Kodama;K. Tomiyasu;K. Ikeda;H. Nakao;Y. Nogami;N. Ikeda;T. Otomo;and N. Hanasaki

文献摘要

相似文献

通过中子对分布函数和扩展x射线吸收函数光谱分析，观察了无磁性焦绿铌酸盐中全入型Nb四面体位移。全入型铌四面体位移是由成键轨道的形成驱动的，具有电荷单重态的特征。在Nbedge中具有共振分量的x射线衍射中的漫射散射表明，全入型Nb四面体位移具有周期性和短程相关性。
We observed all-in type Nb tetrahedral displacement in nonmagnetic pyrochlore niobatesandthrough 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 Nbedge, indicates that the all-in type Nb tetrahedral displacement has the periodicity with its short-range correlation.