The magnitude of the magnetic exchange interaction in the heavy fermion antiferromagnet CeRhIn${}_5$

Abstract

We have used high-resolution neutron spectroscopy experiments to determine the complete spin wave spectrum of the heavy fermion antiferromagnet CeRhIn${}_5$. The spin wave dispersion can be quantitatively reproduced with a simple $J_1$-$J_2$ model that also naturally explains the magnetic spin-spiral ground state of CeRhIn${}_5$ and yields a dominant in-plane nearest-neighbor magnetic exchange constant $J_0$ = 0.74 meV. Our results pave the way to a quantitative understanding of the rich low-temperature phase diagram of the prominent Ce$T$In${}_5$ ($T$ = Co, Rh, Ir) class of heavy fermion materials.

7 pages, 3 figures

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Cited by in corpus (8)

• Electronic in-plane symmetry breaking at field-tuned quantum criticality in CeRhIn5
• Robust Upward Dispersion of the Neutron Spin Resonance in the Heavy Fermion Superconductor Ce${}_{1-x}$Yb${}_x$CoIn${}_5$
• Nature of the spin resonance mode in CeCoIn${}_5$
• Low temperature magnetic structure of CeRhIn${}_5$ by neutron diffraction on absorption-optimized samples
• Electronic Structure and Magnetism in the Layered Triangular Lattice Compound CeAuAl${}_4$Ge${}_2$
• Relaxing Kondo screened Kramers-doublets in CeRhSi${}_3$
• Evidence for charge delocalization crossover in the quantum critical superconductor CeRhIn${}_5$
• Tuning the pressure-induced superconductivity in Pd-substituted CeRhIn5