2011/01/05 by J. Panarin, Justin Panarin, S. Raymond +9
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties of Alloys #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.1101.1018
4 pages, 5 figures
arxiv created 2011/01/05 · openalex publication_date 2011/01/05 · arxiv updated 2011/01/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The influence of La non magnetic impurities on the spin dynamics of CeCoIn5 was studied by inelastic neutron scattering. In La-substituted systems, the spin resonance peak (observed at Ωres=0.55 meV in the pure system) is shifted to lower energies but the ratio Ωres/kBTc remains unchanged. The excitation broadens till it reaches 0.3 meV equal to the value of the quasi-elastic signal in the normal state. The evolution of La substitution is compared with the evolution of the magnetic resonance in Ni and Zn substituted YBa2Cu3O7.