Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy

G. Tomassucci; F. Minati; A. Barinov; Z. Wang; J. X. Yin; T. Mizokawa; N. L. Saini

doi:10.1088/1361-648X/ae7ccb

Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy

G. Tomassucci
, F. Minati
, A. Barinov
, Z. Wang
, J. X. Yin
, T. Mizokawa
, N. L. Saini^*

^*Corresponding author for this work

University of Rome La Sapienza
Sincrotrone Trieste
Beijing Institute of Technology
Southern University of Science and Technology
Waseda University

Research output: Contribution to journal › Article › peer-review

Abstract

We have investigated the intrinsic electronic structure of the KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) kagome superconductor, which exhibits charge-density-wave (CDW) order, by combining scanning photoelectron microscopy 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 (Formula presented) (Formula presented) CDW fluctuations. These results suggest that KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) can serve as a model system for exploring emergent quantum phenomena arising from the interplay of topology, strong correlations, and lattice instabilities.

Original language	English
Article number	265503
Journal	Journal of Physics Condensed Matter
Volume	38
Issue number	26
DOIs	https://doi.org/10.1088/1361-648X/ae7ccb
Publication status	Published - 3 Jul 2026
Externally published	Yes

Keywords

charge density wave
electronic structure
kagome superconductors
nanoARPES
spectromicroscopy

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10.1088/1361-648X/ae7ccb

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Tomassucci, G., Minati, F., Barinov, A., Wang, Z., Yin, J. X., Mizokawa, T., & Saini, N. L. (2026). Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy. Journal of Physics Condensed Matter, 38(26), Article 265503. https://doi.org/10.1088/1361-648X/ae7ccb

@article{08a43ced7f7a4510a0b10d244ad224a1,

title = "Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy",

abstract = "We have investigated the intrinsic electronic structure of the KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) kagome superconductor, which exhibits charge-density-wave (CDW) order, by combining scanning photoelectron microscopy 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 (Formula presented) (Formula presented) CDW fluctuations. These results suggest that KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) can serve as a model system for exploring emergent quantum phenomena arising from the interplay of topology, strong correlations, and lattice instabilities.",

keywords = "charge density wave, electronic structure, kagome superconductors, nanoARPES, spectromicroscopy",

author = "G. Tomassucci and F. Minati and A. Barinov and Z. Wang and Yin, \{J. X.\} and T. Mizokawa and Saini, \{N. L.\}",

note = "Publisher Copyright: {\textcopyright} 2026 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the https://creativecommons.org/licenses/by/4.0/. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.",

year = "2026",

month = jul,

day = "3",

doi = "10.1088/1361-648X/ae7ccb",

language = "English",

volume = "38",

journal = "Journal of Physics Condensed Matter",

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Tomassucci, G, Minati, F, Barinov, A, Wang, Z, Yin, JX, Mizokawa, T & Saini, NL 2026, 'Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy', Journal of Physics Condensed Matter, vol. 38, no. 26, 265503. https://doi.org/10.1088/1361-648X/ae7ccb

Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy. / Tomassucci, G.; Minati, F.; Barinov, A. et al.
In: Journal of Physics Condensed Matter, Vol. 38, No. 26, 265503, 03.07.2026.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy

AU - Tomassucci, G.

AU - Minati, F.

AU - Barinov, A.

AU - Wang, Z.

AU - Yin, J. X.

AU - Mizokawa, T.

AU - Saini, N. L.

N1 - Publisher Copyright: © 2026 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the https://creativecommons.org/licenses/by/4.0/. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

PY - 2026/7/3

Y1 - 2026/7/3

N2 - We have investigated the intrinsic electronic structure of the KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) kagome superconductor, which exhibits charge-density-wave (CDW) order, by combining scanning photoelectron microscopy 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 (Formula presented) (Formula presented) CDW fluctuations. These results suggest that KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) can serve as a model system for exploring emergent quantum phenomena arising from the interplay of topology, strong correlations, and lattice instabilities.

AB - We have investigated the intrinsic electronic structure of the KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) kagome superconductor, which exhibits charge-density-wave (CDW) order, by combining scanning photoelectron microscopy 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 (Formula presented) (Formula presented) CDW fluctuations. These results suggest that KV (Formula presented) (Formula presented) Sb (Formula presented) (Formula presented) can serve as a model system for exploring emergent quantum phenomena arising from the interplay of topology, strong correlations, and lattice instabilities.

KW - charge density wave

KW - electronic structure

KW - kagome superconductors

KW - nanoARPES

KW - spectromicroscopy

UR - https://www.scopus.com/pages/publications/105043819569

U2 - 10.1088/1361-648X/ae7ccb

DO - 10.1088/1361-648X/ae7ccb

M3 - Article

AN - SCOPUS:105043819569

SN - 0953-8984

VL - 38

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 26

M1 - 265503

ER -

Tomassucci G, Minati F, Barinov A, Wang Z, Yin JX, Mizokawa T et al. Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy. Journal of Physics Condensed Matter. 2026 Jul 3;38(26):265503. doi: 10.1088/1361-648X/ae7ccb

Intrinsic electronic structure and nanoscale domains in the kagome superconductor KV(Formula presented) (Formula presented)Sb(Formula presented) (Formula presented)probed by space resolved photoemission spectroscopy

Abstract

Keywords

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