Conveners
T3-1 Geometrically Frustrated Materials (DCMMP) | Matériaux géométriquement frustrés (DPMCM)
- Jeff Quillam (Université de Sherbrooke)
Herbertsmithite ZnCu_(3)OH_(6)Cl_(2) is a mineral material that hosts a kagome plane consisting of Cu2+ ions with spin S = 1/2. We will discuss our single crystal NMR measurements to probe the local spin susceptibility (based on the NMR frequency shift), low frequency spin fluctuations (based on the spin-lattice relaxation rate 1/T_1), and the effects of defect Cu2+ spins occupying the Zn2+...
Title: Thermodynamic and transport properties of single crystal YbNi$_4$Cd
Author: J. Lee, H. Park, E. Mun
Affiliation: Department of Physics, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6
Single crystals of YbNi$_4$Cd and LuNi$_4$Cd were grown via solution growth techniques. We have studied the thermal, magnetic, and electrical properties of the intermetallic system...
Results are presented on analytic and computational analyses of the spin states associated with ABC stacked kagome planes of magnetic ions with only long-range dipole-dipole interactions. Extending previous work on the 2D kagome system, where six-fold discrete degeneracy of the ground state was revealed [1], we show that the 3D FCC kagome lattice exhibits a continuous degeneracy characterized...
In a variety of frustrated triangular lattice antiferromagnets with easy-plane anisotropy, it has been shown that a magnetization plateau is produced at $1/3$ of the saturation value for a magnetic field parallel to the basal plane.
This magnetization plateau is associated with a collinear up-up-down state where two spins are parallel to the field while the third one is antiparallel.
So far,...
The Verwey transition is a phase transition in which the development of charge order results in a rapid increase in electrical resistivity. This transition was first observed in magnetite (Fe3O4), which undergoes a metal-insulator transition at T ~ 125 K, driven by the formation of complex Fe2+/Fe3+ order. Recently, it was proposed that a similar type of transition may occur in Pb3Rh7O15, a...
We discuss recent theoretical progress in understanding possible quantum spin liquid phases and their experimental signatures in frustrated quantum magnets with strong spin-orbit coupling. These developments are directly motivated by very recent experiments on α-RuCl3 and pressurized β-Li2IrO3. We explain how various bond-dependent interactions, such as the Kitaev interaction, arise in such...
