2015/03/27 by A. Yaouanc, P. Dalmas de Reotier, P. Dalmas de Réotier +7
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Excitation #Ion #Lattice (music) #Magnetic and transport properties of perovskites and related materials #Materials science #Muon spin spectroscopy #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Pyrochlore #Quantum mechanics #Relaxation (psychology) #Spin ice #Spinel #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.91.104427
published as Phys. Rev. B 91, 104427 (2015) · 7 pages, 8 figures
openalex publication_date 2015/03/27 · arxiv created 2015/10/02 · arxiv updated 2015/10/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We report specific heat, magnetic, and muon spin relaxation measurements performed on a polycrystalline sample of the normal spinel CdHo2S4. The rare-earth ions sit on a lattice of corner-sharing regular tetrahedra as in pyrochlore compounds. Magnetic ordering is detected at Tc\ensuremath≃0.87 K. From spin-lattice relaxation rate measurements on both sides of Tc we uncover similar magnetic excitation modes driving the so-called persistent spin dynamics at T<Tc. Unidimensional excitations are argued to be at its origin. Often observed spin loop structures are suggested to support these excitations. The possibility of a generic mechanism for their existence is discussed.