Fig. 4: Berry curvature dipole and topology of the Fermi lines.
From: Orbital design of Berry curvature: pinch points and giant dipoles induced by crystal fields
a Behavior of the Berry curvature dipole obtained by changing the chemical potential μ measured in units of \({{{{\mathcal{E}}}}}_{0}\). The different curves correspond to the different values of αR measured in units of \({{{{\mathcal{E}}}}}_{0}/{k}_{F}^{0}\). The other model parameters have been instead fixed as \({{\Delta }}=-0.2{{{{\mathcal{E}}}}}_{0}\), \({{{\Delta }}}_{m}=-0.01{{{{\mathcal{E}}}}}_{0}\), αm = αR. b–f display the Fermi lines and the band-resolved occupied regions in momentum space for \({\alpha }_{R}={\alpha }_{m}=1.5{{{{\mathcal{E}}}}}_{0}/{k}_{F}^{0}\).
