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arXiv · 1607.00639

Spin waves and magnetic exchange interactions in the spin ladder compound RbFe$_2$Se$_3$

Meng Wang·Ming Yi·Shangjian Jin·Hongchen Jiang·Yu Song·Huiqian Luo·A. D. Christianson·C. De la Cruz·E. Bourret-Courchesne·Dao-Xin Yao·D. H. Lee·R. J. Birgeneau
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Abstract

We report an inelastic neutron scattering study of the spin waves of the one-dimensional antiferromagnetic spin ladder compound RbFe$_2$Se$_3$. The results reveal that the products, $SJ$'s, of the spin $S$ and the magnetic exchange interactions $J$'s along the antiferromagnetic (leg) direction and the ferromagnetic (rung) direction are comparable with those for the stripe ordered phase of the parent compounds of the iron-based superconductors. The universality of the $SJ$'s implies nearly universal spin wave dynamics and the irrelevance of the fermiology for the existence of the stripe antiferromagnetic order among various Fe-based materials.

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Meng Wang, Ming Yi, Shangjian Jin, Hongchen Jiang, Yu Song, Huiqian Luo, A. D. Christianson, C. De la Cruz, E. Bourret-Courchesne, Dao-Xin Yao, D. H. Lee, R. J. Birgeneau. 2016-07-03. Spin waves and magnetic exchange interactions in the spin ladder compound RbFe$_2$Se$_3$. https://doi.org/10.1103/physrevb.94.041111

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