Chiral excitonic order from twofold van Hove singularities in kagome metals

Recent experiments have found a two-fold van Hove singularity (TvHS) in the kagome metal CsV3Sb5. Here, the authors use perturbative renormalization group calculations to find that the leading instability in a model of TvHS is a chiral condensate of electron-hole pairs, breaking time-reversal symmet...

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Bibliographic Details
Main Authors: Harley D. Scammell, Julian Ingham, Tommy Li, Oleg P. Sushkov
Format: Article
Language:English
Published: Nature Portfolio 2023-02-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-023-35987-2