Magnetic order in the pyrochlore iridates &lt;em&gt;A&lt;/em&gt;&lt;sub&gt;2&lt;/sub&gt;Ir&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;7&lt;/sub&gt; (&lt;em&gt;A&lt;/em&gt; = Y, Yb)

Disseler, S.M.; Dhital, Chetan; Amato, A.; Giblin, S.R.; de la Cruz, Clarina; Wilson, Stephen D.; Graf, M.J.

doi:10.1103/PhysRevB.86.014428

Magnetic order in the pyrochlore iridates A₂Ir₂O₇ (A = Y, Yb)

Disseler SM, Dhital C, Amato A, Giblin SR, de la Cruz C, Wilson SD & Graf MJ

Citation

Disseler, S. M., Dhital, C., Amato, A., Giblin, S. R., de la Cruz, C., Wilson, S. D., & Graf, M. J. (2012). Magnetic order in the pyrochlore iridates A₂Ir₂O₇ (A = Y, Yb). Physical Review B, 86(1), 014428 (8 pp.). https://doi.org/10.1103/PhysRevB.86.014428

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:11922

We present results from muon spin relaxation/rotation, magnetization, neutron scattering, and transport measurements on polycrystalline samples of the pyrochlore iridates Y₂Ir₂O₇ (Y-227) and Yb₂Ir₂O₇ (Yb-227). Well-defined spontaneous oscillations of the muon asymmetry are observed together with hysteretic behavior in magnetization below 130 K in Yb-227, indicative of commensurate long-range magnetic order. Similar oscillations are observed in Y-227 below 150 K; however, the onset of hysteretic magnetization at T = 190 K indicates a transition to an intermediate state lacking long-range order as observed in Nd-227. Our results also show that insulating members of the iridate family have nearly identical magnetic ground states, and that the presence of magnetic A-site species does not play any significant role in altering the ground-state properties.