Effect of cation size variance on spin and orbital order in Eu$_{1-x}$(La$_{0.254}$Y$_{0.746}$)$_{x}$VO$_3$

A. Nakao; D. Kawana; H. Nakao; K. Hemmi; K. Ikeuchi; K. Iwasa; R. Fukuta; S. Miyasaka; S. Tajima; Y. Murakami

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Effect of cation size variance on spin and orbital order in Eu_(1-x)(La_(0.254)Y_(0.746))_(x)VO₃

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arxiv 1110.0894 v1 pith:ELU3EFGM submitted 2011-10-05 cond-mat.str-el

Effect of cation size variance on spin and orbital order in Eu_(1-x)(La_(0.254)Y_(0.746))_(x)VO₃

R. Fukuta , S. Miyasaka , K. Hemmi , S. Tajima , D. Kawana , K. Ikeuchi , Y. Yamasaki , A. Nakao

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H. Nakao Y. Murakami K. Iwasa

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We have investigated the $R$-ion ($R$ = rare earth or Y) size variance effect on spin/orbital order in Eu$_{1-x}$(La$_{0.254}$Y$_{0.746}$)$_{x}$VO$_3$. The size variance disturbs one-dimensional orbital correlation in $C$-type spin/$G$-type orbital ordered states and suppresses this spin/orbital order. In contrast, it stabilizes the other spin/orbital order. The results of neutron and resonant X-ray scattering denote that in the other ordered phase, the spin/orbital patterns are $G$-type/$C$-type, respectively.

Effect of cation size variance on spin and orbital order in Eu_(1-x)(La_(0.254)Y_(0.746))_(x)VO₃

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