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Charge and Spin Order in La2-xSrxNiO4 (x=0.275 and 1/3)

S. -H. Lee·S-W. Cheong·K. Yamada·C. Majkrzak
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Abstract

We report polarized and unpolarized neutron diffraction measurements on La2-xSrxNiO4 (x=0.275 and 1/3). The data for the spin ordered states are consistent with a collinear spin model in which spins with S=1 are in the NiO2 plane and are uniformly rotated from the charge and spin stripe direction. The deviation angle is larger for x=1/3 than for x=0.275. Furthermore, for x=1/3, the ordered spins reorient below 50 K, which suggests a further lock-in of the doped holes and their magnetic interactions with the S=1 spins.

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S. -H. Lee, S-W. Cheong, K. Yamada, C. Majkrzak. 2000-02-22. Charge and Spin Order in La2-xSrxNiO4 (x=0.275 and 1/3). https://arxiv.org/abs/cond-mat/0002348

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