Structure factor of low-energy spin excitations in a S=1/2 kagome antiferromagnet

Abstract

The ground state of the S=1/2 Heisenberg antiferomagnet on kagome can be viewed as a collection of fermionic spinons bound into small, heavy singlet pairs. Low-energy magnetic excitations in this system correspond to breaking the pairs into individual spinons. We calculate the structure factor for inelastic neutron scattering from independent spinon pairs.

9 pages. Revised in response to referee reports. References added

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• Symmetry Breaking on the Three-Dimensional Hyperkagome Lattice of Na_4Ir_3O_8
• Corrections to Pauling residual entropy and single tetrahedron based approximations for the pyrochlore lattice Ising antiferromagnet
• A Proposal to Use Neutron Scattering to Measure Scalar Spin Chirality Fluctuations in Kagome Lattices
• Resonating valence bond physics is not always governed by the shortest tunneling loops
• Impurity-doped Kagome Antiferromagnet: A Quantum Dimer Model Approach
• Quantum dimer model for the spin-1/2 kagome Z2 spin liquid
• Spin-1/2 Heisenberg antiferromanget on kagome: a $Z_2$ spin liquid with fermionic spinons
• Dynamical spin correlations of the kagome antiferromagnet
• Spectrum of itinerant fractional excitations in quantum spin ice
• Structure Factors of the Kagome-Lattice Heisenberg antiferromagnets at finite temperatures
• Destruction of valence-bond order in a $S=1/2$ sawtooth chain with a Dzyaloshinskii-Moriya term
• Exact Hole-induced Resonating-Valence-Bond Ground State in Certain $U=\infty$ Hubbard Models
• Detecting non-magnetic excitations in quantum magnets