How to detect weak emergent broken-symmetries of the Kagome antiferromagnet from Raman spectroscopy

Abstract

We show that the magnetic Raman response of a spin-liquid is independent of the polarizations of the light for triangular symmetries. In contrast, a ground-state that has a broken symmetry shows characteristic oscillations when the polarizations are rotated. This would allow to detect weak broken symmetries and emergent order-parameters. We focus on the Kagome antiferromagnet where no conventional long-range order has been found so far, and present the Raman cross-section of a spin-liquid and a valence bond crystal (VBC) using a random phase approximation.

4 pages, 2 figures, v2. intro partially rewritten

References in corpus (6)

• Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2
• Inelastic Light Scattering From Correlated Electrons
• Projected wavefunction study of Spin-1/2 Heisenberg model on the Kagome lattice
• Quantum magnetism in the paratacamite family: towards an ideal kagome lattice
• Ground State of the Kagome Lattice Heisenberg Antiferromagnet
• Magnetic Susceptibility of the Kagome Antiferromagnet ZnCu3(OH)6Cl2

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• Fractional Spin fluctuations and quantum liquid signature in Gd2ZnIrO6
• Anomalous thermal relaxation and pump-probe spectroscopy of 2D topologically ordered systems
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• Thermodynamic Properties of Kagome Antiferromagnets with different Perturbations
• Projective-symmetry-group analysis of inelastic light scattering in Kitaev spin balls
• Probing emergent QED in quantum spin ice via Raman scattering of phonons: shallow inelastic scattering and pair production
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• Dynamical Response of the Kitaev Spin Liquid under Third-Nearest-Neighbor Heisenberg Interaction
• Non-Loudon-Fleury Raman scattering in spin-orbit coupled Mott insulators