Abstract Body

The Kagome lattice, which consists of a two-dimensional network of corner-sharing triangles, often exhibits novel quantum phenomena originating from geometrical frustration in real space and nontrivial band topology in reciprocal space. Indeed, in a new family of kagome superconductors, AV₃Sb₅ (where A = K, Rb, and Cs), various exotic properties have been reported, such as a large anomalous Hall effect without long-range magnetic order, unconventional charge-density wave (CDW) that potentially involves time-reversal symmetry breaking, nematic ordering, and topological surface states. To elucidate the electronic states responsible for these exotic phases, we have performed angle-resolved photoemission spectroscopy of AV₃Sb₅. In this presentation, we present our recent progress with a particular focus on the CDW-induced electronic reconstructions (Fig. 1) [1-6].

References

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