Fig. 3: Analytical model calculation of optical Hall conductivity for the massive Dirac fermion. | npj Quantum Materials

Fig. 3: Analytical model calculation of optical Hall conductivity for the massive Dirac fermion.

From: Observation of anomalous Hall resonance of massive Dirac fermions in topological kagome-lattice magnet

Fig. 3: Analytical model calculation of optical Hall conductivity for the massive Dirac fermion.The alternative text for this image may have been generated using AI.

a The schematic illustration of the two-dimensional massive Dirac fermion assumed in the calculation. b The zero-temperature Hall conductance spectra arising from the single massive Dirac fermion; we adopted 2 m = 33 meV, μ = 113 meV, and γ = 22 meV. The purple filled area (∼ 2μ) denotes the optical gap. c Temperature variation of the calculated optical Hall conductance. In the right axes of (b) and (c), the two-dimensional optical Hall conductance \({\sigma }_{{xy}}^{{\rm{MD}}}\left(\omega \right)\) is extended into the three-dimensional optical Hall conductivity \(\widetilde{{\sigma }_{{xy}}^{{\rm{MD}}}}\left(\omega \right)\) representing the responses of bulk materials. d Schematic illustration of the electronic distribution on the massive Dirac band at finite temperature.

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