Physics of Superconductivity and Magnetism Open access Peer reviewed

Concurrent evolution of vortex phase diagram and charge density wave order in kagome superconductor CsV 3 Sb 5- x Sn x

Hongyu Li, Huachen Rao, Xingchen Zhou, Houpu Li and 4 more

Chinese Physics B | Oct 9, 2026

Abstract

Abstract

Abstract The kagome lattice superconductor CsV 3 Sb 5 display a surprisingly rich vortex phase diagram, which adds to the unique properties of its superconducting state that develops from a charge density wave (CDW) state. The coexisting superconductivity and CDW in CsV 3 Sb 5 can be effectively manipulated via chemical doping. Here we systematically investigate the vortex matter phases of CsV 3 Sb 5- x Sn x with different doping concentrations x under in-plane magnetic fields via electrical transport, magnetic torque and ac susceptibility measurements. Three superconducting regions are identified in the phase diagrams of CsV 3 Sb 5- x Sn x , corresponding to superconductivity developing from the 2×2 CDW state ( x = 0, 0.06), short-ranged charge stripe state ( x = 0.09) and fluctuating CDW state ( x = 0.25); each is characterized by distinct behavior of vortex dynamics. The results reveal that the CDW behavior in the normal state exerts a remarkable influence on the superconducting state, which indicates unusual interplay between CDW and superconductivity in CsV 3 Sb 5- x Sn x .

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Authors

Researchers on this paper

Hongyu Li

first | University of Science and Technology of China

Huachen Rao

middle | University of Science and Technology of China

Xingchen Zhou

middle | University of Science and Technology of China

Houpu Li

middle | University of Science and Technology of China

Zhao Gong

middle | University of Science and Technology of China

Tao Wu

middle | University of Science and Technology of China | ORCID 0000-0001-9805-4434

Ziji Xiang

middle | University of Science and Technology of China | ORCID 0000-0001-7132-6591

Xianhui Chen

last | University of Science and Technology of China

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Citation

BibTeX

@article{Li2026Concurrent,
  title = {Concurrent evolution of vortex phase diagram and charge density wave order in kagome superconductor CsV 3 Sb 5- x Sn x},
  author = {Hongyu Li and Huachen Rao and Xingchen Zhou and Houpu Li and Zhao Gong and Tao Wu and Ziji Xiang and Xianhui Chen},
  journal = {Chinese Physics B},
  year = {2026},
  doi = {10.1088/1674-1056/aeb24c},
  url = {https://doi.org/10.1088/1674-1056/aeb24c}
}

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