The symmetry of the spin Hamiltonian in herbertsmithite, a spin-1/2 kagomé lattice

Abstract

We present magnetization measurements on oriented powder of ZnCu${}_3$(OH)${}_6$Cl${}_2$ along and perpendicular to the orienting field. We find a dramatic difference in the magnetization between the two directions. It is biggest at low measurement fields $H$ or high temperatures. We show that the difference at high temperatures must emerge from Ising-like exchange anisotropy. This allows us to explain muon spin rotation data at $T\to 0$ in terms of an exotic ferromagnetic ground state.

arXiv comment5 pages, 5 figures

References in corpus (17)

• Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2
• Quantum magnetism in the paratacamite family: towards an ideal kagome lattice
• Spin chirality on a two-dimensional frustrated lattice
• 17O NMR study of the intrinsic magnetic susceptibility and spin dynamics of the quantum kagome antiferromagnet ZnCu3(OH)6Cl2
• Symmetry breaking due to Dzyaloshinsky-Moriya interactions in the kagome lattice
• Dzyaloshinsky-Moriya Anisotropy in the Spin-1/2 Kagomé Compound ZnCu${}_3$(OH)${}_6$Cl${}_2$
• Quantum spin liquid states in the two dimensional kagome antiferromagnets, ZnxCu4-x(OD)6Cl2
• Two-dimensional periodic frustrated Ising models in a transverse field
• The magnetic groundstate of an experimental $S=1/2$ kagomé antiferromagnet
• ^{63}Cu, ^{35}Cl, and ^{1}H NMR in the S=1/2 Kagomé Lattice ZnCu_{3}(OH)_{6}Cl_{2}
• Dimerized phase and transitions in a spatially anisotropic square lattice antiferromagnet
• Low temperature magnetization of the S=1/2 kagome antiferromagnet ZnCu_3(OH)_6Cl_2
• Magnetic susceptibility and specific heat of the spin-1/2 Heisenberg model on the kagome lattice and experimental data on ZnCu3(OH)6Cl2
• Kagome lattice antiferromagnets and Dzyaloshinsky-Moriya interactions
• Heisenberg antiferromagnet with anisotropic exchange on the Kagome lattice: Description of the magnetic properties of volborthite
• Spin Anisotropy in ZnCu_3(OH)_6Cl_2
• Slow Relaxation Process in Ising like Heisenberg Kagome Antiferromagnets due to Macroscopic Degeneracy in the Ordered State

Cited by in corpus (12)

• Quantum Kagome antiferromagnet ZnCu3(OH)6Cl2
• Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu${}_3$(OH)${}_6$Cl${}_2$ using Single Crystals
• Synthesis and Characterization of Single Crystal Samples of Spin-$1/2$ Kagome Lattice Antiferromagnets in the Zn-Paratacamite Family Zn${}_x$Cu${}_{4-x}$(OH)${}_6$Cl${}_2$
• Quantum criticality of the kagome antiferromagnet with Dzyaloshinskii-Moriya interactions
• Quantum spin liquids in the absence of spin-rotation symmetry: application to Herbertsmithite
• Quantum kagome antiferromagnet: ZnCu3(OH)6Cl2
• $\mu$SR Insight into the Impurity Problem in Quantum Kagome Antiferromagnets
• Ghost modes and continuum scattering in the dimerized distorted kagome lattice antiferromagnet Rb${}_2$Cu${}_3$SnF${}_{12}$
• Doping on the kagome lattice: A variational Monte-Carlo study of the $t-J$ model
• Infrared phonons as a probe of a spin-liquid states in herbertsmithite ZnCu3(OH)6Cl2
• The Herbertsmithite Hamiltonian: $\mu$SR measurements on single crystals
• Dynamic Spin Fluctuations at $T\to 0$ in a Spin-1/2 Ferromagnetic Kagome Lattice