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- W4323921949 abstract "The recently discovered kagome materials $A$V$_3$Sb$_5$ ($A$ = K, Rb, Cs) attract intense research interest in intertwined topology, superconductivity, and charge density waves (CDW). Although the in-plane $2times2$ CDW is well studied, its out-of-plane structural correlation with the Fermi surface properties is less understood. In this work, we advance the theoretical description of quantum oscillations and investigate the Fermi surface properties in the three-dimensional CDW phase of CsV$_3$Sb$_5$. We derived Fermi-energy-resolved and layer-resolved quantum orbits that agree quantitatively with recent experiments in the fundamental frequency, cyclotron mass, and topology. We reveal a complex Dirac nodal network that would lead to a $pi$ Berry phase of a quantum orbit in the spinless case. However, the phase shift of topological quantum orbits is contributed by the orbital moment and Zeeman effect besides the Berry phase in the presence of spin-orbital coupling (SOC). Therefore, we can observe topological quantum orbits with a $pi$ phase shift in otherwise trivial orbits without SOC, contrary to common perception. Our work reveals the rich topological nature of kagome materials and paves a path to resolve different topological origins of quantum orbits." @default.
- W4323921949 created "2023-03-12" @default.
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- W4323921949 date "2023-03-08" @default.
- W4323921949 modified "2023-10-18" @default.
- W4323921949 title "Emergent topological quantum orbits in the charge density wave phase of kagome metal CsV$_3$Sb$_5$" @default.
- W4323921949 doi "https://doi.org/10.48550/arxiv.2303.04924" @default.
- W4323921949 hasPublicationYear "2023" @default.
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