Fig. 3. Properties of the HFL.

(A) Band structure of the HFL along high-symmetry directions where the chiral Kondo coupling opens a topological hybridization gap between the upper (orange) and lower (blue) bands. The energy is measured with respect to the chemical potential. (B) Berry curvature of the lower HFL band, where the red circles denote the hole FS. The flux of Ω_k↑ in the entire Brillouin zone gives Chern number C_↑ = 1 = −C_↓. (C) Quasiparticle effective mass m*/m_W as a function of the angle ϕ on the heavy electrons FS. The calculation has been performed at x = 0.46 and J_K/t_W = 1 (bandwidth 9t_W).