Berry Curvature-Induced Magnetic Breakdown
Year: 2025
Type: article
Abstract: The one-band semiclassical approximation is a fundamental tool for analyzing the dynamics of electrons in materials with nonzero Berry curvature. To understand the limits of this approximation in the presence of Berry curvature, we exactly solve a continuum model with infinitely-many bands of constant positive Berry curvature in the presence of a transverse magnetic field. With further support from a semiclassical analysis of this model, we show that the results of the semiclassical approximation are exact over a wide range of parameters, but there is a critical value of the magnetic field where the one-band approximation breaks down, leading to a divergence in the energy spectrum.
Source: Stanford Digital Repository
DOI: 10.25740/bt473hz0927
Authors: Josephs, V. Nathan, Devakul, Trithep, Khemani, Vedika, Stanford University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6946059865
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