Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV <sub>3</sub> Sb <sub>5</sub> probed by space resolved photoemission spectroscopy
kagome superconductor, which exhibits charge-density-wave (CDW) order, by combining scanning photoelectron microscopy (SPEM) and angle-resolved photoemission spectroscopy using a sub-micron beam. Our findings suggest that in the CDW phase of the system at 30 K, percolative paths emerge, while at room temperature, the system exhibits homogeneity with suppressed CDW correlations. Despite its inhomogeneous nature, the CDW persists even on the Sb-terminated surface, as evidenced by the Dirac-cone gap associated with 2 × 2 CDW fluctuations. These results suggest that KV3Sb5 can serve as a model system for exploring emergent quantum phenomena arising from the interplay of topology, strong correlations, and lattice instabilities.
Authors
- T. Mizokawa (ORCID: https://orcid.org/0000-0002-7682-2348)
- G. Tomassucci (ORCID: https://orcid.org/0000-0002-2441-3796)
- N. L. Saini (ORCID: https://orcid.org/0000-0003-3684-1517)
- Zhiwei Wang (ORCID: https://orcid.org/0000-0003-0182-2471)
- A.V. Barinov
- F Minati
- Jiaxin Yin
Institutions
- Beijing Institute of Technology (CN)
- Waseda University (JP)
- Elettra-Sincrotrone Trieste S.C.p.A. (IT)
- Southern University of Science and Technology (CN)
- Sapienza University of Rome (IT)
Publication Details
- Journal
- Journal of Physics Condensed Matter
- Published
- 2026-06-12
- DOI
- https://doi.org/10.1088/1361-648x/ae7ccb
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Sapienza Università di Roma