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Spin waves and magnetic exchange interactions in the spin ladder compound RbFe₂Se₃

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arxiv 1607.00639 v1 pith:37GIKTKB submitted 2016-07-03 cond-mat.str-el cond-mat.supr-con

Spin waves and magnetic exchange interactions in the spin ladder compound RbFe₂Se₃

Meng Wang , Ming Yi , Shangjian Jin , Hongchen Jiang , Yu Song , Huiqian Luo , A. D. Christianson , C. De la Cruz
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E. Bourret-Courchesne Dao-Xin Yao D. H. Lee R. J. Birgeneau
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classification cond-mat.str-el cond-mat.supr-con
keywords spinantiferromagneticcompounddirectionexchangeinteractionsladdermagnetic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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