External magnetic field effects on a distorted kagome antiferromagnet

Abstract

We report bulk magnetization, and elastic and inelastic neutron scattering measurements under an external magnetic field, $H$, on the weakly coupled distorted kagome system, Cu_{2}(OD)_3Cl. Our results show that the ordered state below 6.7 K is a canted antiferromagnet and consists of large antiferromagnetic $ac$-components and smaller ferromagnetic $b$-components. By first-principle calculations and linear spin wave analysis, we present a simple spin hamiltonian with non-uniform nearest neighbor exchange interactions resulting in a system of coupled spin trimers with a single-ion anisotropy that can qualitatively reproduce the spin dynamics of Cu_{2}(OD)_3Cl.

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References in corpus (8)

• Spin Liquid State in an Organic Mott Insulator with Triangular Lattice
• Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2
• Quantum magnetism and criticality
• Quantum magnetism in the paratacamite family: towards an ideal kagome lattice
• Variational study of triangular lattice spin-1/2 model with ring exchanges and spin liquid state in κ-(ET)_2 Cu_2 (CN)_3
• Quantum spin liquid states in the two dimensional kagome antiferromagnets, ZnxCu4-x(OD)6Cl2
• The magnetic groundstate of an experimental $S=1/2$ kagomé antiferromagnet
• Theory of Néel and Valence-Bond-Solid Phases on the Kagome Lattice of Zn-paratacamite

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• Herbertsmithite and the Search for the Quantum Spin Liquid
• Quantum Kagome antiferromagnet ZnCu3(OH)6Cl2
• Correlated impurities and intrinsic spin liquid physics in the kagome material Herbertsmithite
• Materializing Rival Ground States in the Barlowite Family of Kagome Magnets: Quantum Spin Liquid, Spin Ordered, and Valence Bond Crystal States
• Effect of Zn doping on the antiferromagnetism in kagome Cu${}_{4-x}$Zn${}_x$(OH)${}_6$FBr
• Quantum kagome antiferromagnet: ZnCu3(OH)6Cl2
• Numerical study of the thermodynamics of clinoatacamite
• Transition-metal distribution in kagome antiferromagnet CoCu3(OH)6Cl2 revealed by resonant x-ray diffraction
• Magnetic field-induced instability of the cooperative paramagnetic state in Zn${}_x$Co${}_{4-x}$(OD)${}_6$Cl${}_2$
• Neel and Valence Bond Crystal Order on a Distorted Kagome Lattice: Implications For Zn-Paratacamite
• Spin Dynamics of Trimers on a Distorted Kagomé Lattice