2006/01/31 by K. C. Rule, J. P. C. Ruff, Jacob P. C. Ruff +13 · 3 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Diffraction #Inelastic neutron scattering #Ising model #Multiferroics and related materials #Neutron diffraction #Neutron scattering #Nuclear materials and radiation effects #Paramagnetism #Phase (matter) #Phase diagram #Physics #Pyrochlore #Quantum mechanics #Scattering #Spin (aerodynamics) #Spin ice #Spins #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.96.177201
5 pages, 4 figures, submitted to PRL
arxiv created 2006/01/31 · openalex publication_date 2006/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
High resolution time-of-flight neutron scattering measurements on Tb(2)Ti(2)0(7) reveal a rich low temperature phase diagram in the presence of a magnetic field applied along [110]. In zero field at T = 0.4 K, Tb(2)Ti(2)0(7) is a highly correlated cooperative paramagnet with disordered spins residing on a pyrochlore lattice of corner-sharing tetrahedra. Application of a small field condenses much of the magnetic diffuse scattering, characteristic of the disordered spins, into a new Bragg peak characteristic of a polarized paramagnet. At higher fields, a magnetically ordered phase is induced, which supports spin wave excitations indicative of continuous, rather than Ising-like, spin degrees of freedom.