Low temperature magnetic structure of CeRhIn${}_5$ by neutron diffraction on absorption-optimized samples

Abstract

Two aspects of the ambient pressure magnetic structure of heavy fermion material CeRhIn${}_5$ have remained under some debate since its discovery: whether the structure is indeed an incommensurate helix or a spin density wave, and what is the precise magnitude of the ordered magnetic moment. By using a single crystal sample optimized for hot neutrons to minimize neutron absorption by Rh and In, here we report an ordered moment of $m=0.54(2){\mu }_B$. In addition, by using spherical neutron polarimetry measurements on a similar single crystal sample, we have confirmed the helical nature of the magnetic structure, and identified a single chiral domain.

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• Determination of the magnetic structure of CePt${}_2$In${}_7$ by means of neutron diffraction
• Investigation of the commensurate magnetic structure in heavy fermion CePt2In7 using magnetic resonant X-ray diffraction
• Origin of the 30 T transition in CeRhIn${}_5$ in tilted magnetic fields
• Robust Fermi-Surface Morphology of CeRhIn${}_5$ across the Putative Field-Induced Quantum Critical Point
• Magnetic structure of Cd-doped CeIrIn${}_5$
• Realization of the Axial Next-Nearest-Neighbor Ising model in U${}_3$Al${}_2$Ge${}_3$
• CeCu${}_2$Si${}_2$ and YbRh${}_2$Si${}_2$: Strange Cases of Heavy-Fermion Superconductivity
• Magnetic field tuned superconducting and normal phase magnetism in CeCo${}_{0.5}$Rh${}_{0.5}$In${}_5$