Gd pyrochlore under a staggered molecular field in Gd${}_2$Ir${}_2$O${}_7$

Abstract

The influence of a staggered molecular field in frustrated rare-earth pyrochlores, produced via the magnetic iridium occupying the transition metal site, can generate exotic ground states, such as the fragmentation of the magnetization in the Ho compound. At variance with the Ising Ho${}^{3+}$ moment, we focus on the behavior of the quasi isotropic magnetic moment of the Gd${}^{3+}$ ion at the rare-earth site. By means of macroscopic measurements and neutron scattering, we find a complex situation where different components of the magnetic moment contribute to two antiferromagnetic non-collinear arrangements: a high temperature all in - all out order induced by the Ir molecular field, and Palmer and Chalker correlations that tend to order at much lower temperatures. This is enabled by the anisotropic nature of the Gd-Gd interactions and requires a weak easy-plane anisotropy of the Gd${}^{3+}$ moment due to the mixing of the ground state with multiplets of higher spectral terms.

arXiv comment6 pages, 5 figures

References in corpus (27)

• Magnetic Pyrochlore Oxides
• Properties of a classical spin liquid: the Heisenberg pyrochlore antiferromagnet
• Magnetic-Moment Fragmentation and Monopole Crystallization
• Order induced by dipolar interactions in a geometrically frustrated antiferromagnet
• Order in the Heisenberg Pyrochlore: The Magnetic Structure of Gd2Ti2O7
• Theory of multiple--phase competition in pyrochlore magnets with anisotropic exchange, with application to Yb2Ti2O7, Er2Ti2O7 and Er2Sn2O7
• Living on the edge : ground-state selection in quantum spin-ice pyrochlores
• Rods of Neutron Scattering Intensity in Yb2Ti2O7: Compelling Evidence for Significant Anisotropic Exchange in a Magnetic Pyrochlore Oxide
• Structural distortion and the spin liquid state in Tb2Ti2O7
• Magnetic ordering in Gd2Sn2O7: the archetypal Heisenberg pyrochlore antiferromagnet
• Impact of Stoichiometry of Yb2Ti2O7 on its Physical Properties
• Are multiphase competition & order-by-disorder the keys to understanding Yb2Ti2O7?
• Enhanced weak ferromagnetism and conductivity in hole-doped pyrochlore iridate Y2Ir2O7
• Spin dynamics in the presence of competing ferro- and antiferro-magnetic correlations in Yb2Ti2O7
• Quantum spin fluctuations in the dipolar Heisenberg-like rare earth pyrochlores
• Direct determination of the spin structure of Nd${}_2$Ir${}_2$O${}_7$ by means of neutron diffraction
• Anisotropy tuned magnetic order in pyrochlore iridates
• Semi-classical spin dynamics of the antiferromagnetic Heisenberg model on the kagome lattice
• Single-ion anisotropy in the gadolinium pyrochlores studied by an electron paramagnetic resonance
• Cluster-glass phase in pyrochlore XY antiferromagnets with quenched disorder
• Low temperature specific heat and possible gap to magnetic excitations in the Heisenberg pyrochlore antiferromagnet Gd2Sn207
• Spin dynamics in the ordered spin ice Tb${}_2$Sn${}_2$O${}_7$
• Long range order in the dipolar XY antiferromagnet Er${}_2$Sn${}_2$O${}_7$
• Robust pinning of magnetic moments in pyrochlore iridates
• Fluctuation-Driven Selection at Criticality in a Frustrated Magnetic System: the Case of Multiple-k Partial Order on the Pyrochlore Lattice
• Field-Driven Transitions in the Dipolar Pyrochlore Antiferromagnet Gd${}_2$Ti${}_2$O${}_7$
• Magnetic excitations in dipolar pyrochlore antiferromagnet Gd${}_2$Sn${}_2$O${}_7$

Cited by in corpus (9)

• Strong quantum fluctuations due to competition between magnetic phases in a pyrochlore iridate
• DIFFPY.MPDF: Open-source software for magnetic pair distribution function analysis
• A New Spin on Material Properties: Local Magnetic Structure in Functional and Quantum Materials
• Quantitative investigation of the short-range magnetic correlations in candidate quantum spin liquid NaYbO${}_2$
• Magnetic Pair Distribution Function Data Using Polarized Neutrons and ad hoc Corrections
• Spin dynamics of the director state in frustrated hyperkagome systems
• Vison crystal in quantum spin ice on the breathing pyrochlore lattice
• Quasi-two-dimensional ferromagnetism in the triangular magnet EuAl${}_{12}$O${}_{19}$
• Cluster spin glass correlations and dynamics in Zn${}_{0.5}$Mn${}_{0.5}$Te