Dark Matter Detection with Strongly Correlated Topological Materials: Flatband Effect

Dirac materials have been proposed as a new class of electron-based detectors for light dark-matter (DM) scattering or absorption, with predicted sensitivities far exceeding superconductors and superfluid helium. The superiority of Dirac materials originates from a significantly reduced in-medium di...

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Bibliographic Details
Published inarXiv.org
Main Authors Huang, Zhao, Lane, Christopher, Grefe, Sarah E, Nandy, Snehasish, Fauseweh, Benedikt, Paschen, Silke, Si, Qimiao, Zhu, Jian-Xin
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 31.05.2023
Subjects
Correlation
Dark matter
Dielectric strength
Fermi surfaces
Fluids
Liquid helium
Metalloids
Scattering
Sensitivity
Superconductors
Superfluidity
Topology
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Summary:Dirac materials have been proposed as a new class of electron-based detectors for light dark-matter (DM) scattering or absorption, with predicted sensitivities far exceeding superconductors and superfluid helium. The superiority of Dirac materials originates from a significantly reduced in-medium dielectric response winning over the suppression of DM scattering owing to the limited phase space at the point-like Fermi surface. Here we propose a new route to enhance significantly the DM detection efficiency via strongly correlated topological semimetals. Specifically, by considering a strongly correlated Weyl semimetal model system, we demonstrate that the strong correlation-induced flatband effects can amplify the coupling and detection sensitivity to light DM particles by expanding the scattering phase space, while maintaining a weak dielectric in-medium response.
ISSN:2331-8422