2014/08/27 by Pinaki Das, SH.-Z. Lin, S. -Z. Lin +11 · 1 citation
Materials Science · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Fermion #Ferromagnetism #Ground state #Heavy fermion #Iron-based superconductors research #Magnetism #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Spin (aerodynamics) #Spin wave #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.113.246403
published as Phys. Rev. Lett. 113, 246403 (2014) · 7 pages, 3 figures
arxiv created 2014/08/27 · openalex publication_date 2014/12/08 · arxiv updated 2014/12/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have used high-resolution neutron spectroscopy experiments to determine the complete spin wave spectrum of the heavy-fermion antiferromagnet CeRhIn5. The spin wave dispersion can be quantitatively reproduced with a simple frustrated J1\ensuremath-J2 model that also naturally explains the magnetic spin-spiral ground state of CeRhIn5 and yields a dominant in-plane nearest-neighbor magnetic exchange constant J0=0.74(3) meV. Our results pave the way to a quantitative understanding of the rich low-temperature phase diagram of the prominent CeTIn5 (T=Co, Rh, Ir) class of heavy-fermion materials.