Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure

Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure Quantum geometry in condensed-matter physics has two components: the real part quantum metric and the imaginary part Berry curvature. Whereas the effects of Berry curvature have been observed through phenomena such as the quantum Hall effect in two-dimensional electron gases and the anomalous Hall effect (AHE) in ferromagnets, the quantum metric has rarely been explored. Here, we report a nonlinear Hall effe...