Heterogeneous superconductivity emerging from a charge-stripe state in kagome lattices
Abstract
Charge density wave (CDW) and superconductivity have long been recognized as competing orders. However, recent achievements establish that the interplay between these two collective electronic phenomena can be more perplexing, with emergent phenomena arising from their cooperation. Here we report a distinctive case of the kagome superconductors CsV3Sb5-xSnx, in which the characteristics of superconductivity evolve in accordance with the form of CDW order. As the triple-Q CDW in CsV3Sb5 transforms to a short-range stripelike CDW at xc = 0.07, a sudden change in superconducting properties occurs concomitantly. A combination of thermodynamic, electrical transport and scanning tunneling microscopy experiments reveals a heterogeneous superconducting state beyond xc: the superconducting gap exhibits pronounced spatial variation, in conformity with a distribution of critical temperature and the resulted superconducting precursor effects. Moreover, abundant normal fluid persists deep into the superconducting state, as evidenced by remnants of electronic specific heat and zero-energy quasiparticle interference. These observations are unrelated to the chemical inhomogeneity and residual strain effect introduced by Sn substitution. Instead, they emulate the phenomenology that a sign-changing superconducting order parameter is subject to strong pair-breaking scattering with the short-range charge stripes and hence reflect the unconventional nature of superconductivity developing inside the charge-stripe state.
Related
- Altermagnetic Control of Charge-4e Superconductivity
- Chiral p-Wave Superconductivity Proximate to a Fractional Chern Insulator and a Topological Charge Density Wave in a Moiré Chern Band
- Topological Chiral Superconductivity from Doping Correlated Charge Transfer Insulator with Orbital Magnetism
- Interplay of Excitonic Charge Density Wave and Superconductivity in Transition Metal Dichalcogenides
- Strain-Tuned Nodal Superconductivity in the Charge-Ordered Kagome Metal CsV3Sb5
BibTeX
@misc{li2026heterogeneous,
title = {{Heterogeneous superconductivity emerging from a charge-stripe state in kagome lattices}},
author = {Hongyu Li and Shuikang Yu and Huachen Rao and Zhuying Wang and Xingchen Zhou and Houpu Li and Yunmei Zhang and Zhao Gong and Xin Yu and Rui Wu and Tao Wu and Zhenyu Wang and Ziji Xiang and Xianhui Chen},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.32097},
eprint = {2610.32097},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.32097},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Heterogeneous superconductivity emerging from a charge-stripe state in kagome lattices
AU - Hongyu Li
AU - Shuikang Yu
AU - Huachen Rao
AU - Zhuying Wang
AU - Xingchen Zhou
AU - Houpu Li
AU - Yunmei Zhang
AU - Zhao Gong
AU - Xin Yu
AU - Rui Wu
AU - Tao Wu
AU - Zhenyu Wang
AU - Ziji Xiang
AU - Xianhui Chen
PY - 2026
DA - 2026/10/23
PB - arXiv
DO - 10.48550/arxiv.2610.32097
UR - https://arxiv.org/abs/2610.32097
AB - Charge density wave (CDW) and superconductivity have long been recognized as competing orders. However, recent achievements establish that the interplay between these two collective electronic phenomena can be more perplexing, with emergent phenomena arising from their cooperation. Here we report a distinctive case of the kagome superconductors CsV3Sb5-xSnx, in which the characteristics of superconductivity evolve in accordance with the form of CDW order. As the triple-Q CDW in CsV3Sb5 transforms to a short-range stripelike CDW at xc = 0.07, a sudden change in superconducting properties occurs concomitantly. A combination of thermodynamic, electrical transport and scanning tunneling microscopy experiments reveals a heterogeneous superconducting state beyond xc: the superconducting gap exhibits pronounced spatial variation, in conformity with a distribution of critical temperature and the resulted superconducting precursor effects. Moreover, abundant normal fluid persists deep into the superconducting state, as evidenced by remnants of electronic specific heat and zero-energy quasiparticle interference. These observations are unrelated to the chemical inhomogeneity and residual strain effect introduced by Sn substitution. Instead, they emulate the phenomenology that a sign-changing superconducting order parameter is subject to strong pair-breaking scattering with the short-range charge stripes and hence reflect the unconventional nature of superconductivity developing inside the charge-stripe state.
ER -