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arXiv · 0704.1187

Magnetic structure of CeRhIn$_{5}$ under magnetic field

S. Raymond·E. Ressouche·G. Knebel·D. Aoki·J. Flouquet
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Abstract

The magnetically ordered ground state of CeRhIn$_{5}$ at ambient pressure and zero magnetic field is an incomensurate helicoidal phase with the propagation vector $\bf{k}$=(1/2, 1/2, 0.298) and the magnetic moment in the basal plane of the tetragonal structure. We determined by neutron diffraction the two different magnetically ordered phases of CeRhIn$_{5}$ evidenced by bulk measurements under applied magnetic field in its basal plane. The low temperature high magnetic phase corresponds to a sine-wave structure of the magnetization being commensurate with $\bf{k}$=(1/2, 1/2, 1/4). At high temperature, the phase is incommensurate with $\bf{k}$=(1/2, 1/2, 0.298) and a possible small ellipticity. The propagation vector of this phase is the same as the one of the zero-field structure.

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S. Raymond, E. Ressouche, G. Knebel, D. Aoki, J. Flouquet. 2007-04-10. Magnetic structure of CeRhIn$_{5}$ under magnetic field. https://doi.org/10.1088/0953-8984%2F19%2F24%2F242204

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