"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, E. Bourret-Courchesne, Dao-Xin Yao, D. H. Lee, and R. J. Birgeneau; Physical Review B, 07/20/16.

Additional Authors: 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, and R. J. Birgeneau

Abstract:

We report an inelastic neutron scattering study of the spin waves of the one-dimensional antiferromagnetic spin ladder compound RbFe2Se3. The results reveal that the products, SJ ’s, of the spin S and the magnetic exchange interaction J 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.