New inelastic neutron scattering and polarized data on the kagome material YCu3-Br show the temperature broadening, magnetic anisotropy, and high-energy features expected of anisotropic Dirac spinons, though the Dirac spin liquid interpretation remains model-dependent.
Generation of gauge magnetic fields in a kagome spin liqud candidate using the Dzyaloshinskii-Moriya interaction
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abstract
The recent discovery of magnetization oscillations in a kagome spin liquid candidate motivates us to examine the origin of the gauge magnetic field term that can give rise to quantum oscillations of fermionic spinons. We find that in the presence of the Dzyaloshinskii-Moriya interaction and an average spin polarization, the spin permutation operator around the unit cell acquires an imaginary part, and a net gauge flux is generated through the unit cell of the kagome lattice. This new mechanism of gauge field generation can account for the strength of the gauge magnetic field needed to explain the experiment.
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Spin excitations arising from anisotropic Dirac spinons in YCu$_3$(OD)$_6$Br$_2$[Br$_{0.33}$(OD)$_{0.67}$]
New inelastic neutron scattering and polarized data on the kagome material YCu3-Br show the temperature broadening, magnetic anisotropy, and high-energy features expected of anisotropic Dirac spinons, though the Dirac spin liquid interpretation remains model-dependent.