dorsal/arxiv
View SchemaEvolution from three-dimensional charge density wave to one-dimensional stripe order in CsV$_{3-x}$Ti$_x$Sb$_5$
| Authors | Qian Xiao, Xiangqi Liu, Zihao Huang, Xiquan Zheng, Shilong Zhang, Hui Chen, Hong-Jun Gao, Yanfeng Guo, Yingying Peng |
|---|---|
| Categories | |
| ArXiv ID | 2601.09257vv1 |
| URL | https://arxiv.org/abs/2601.09257 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
Understanding intertwined phases near quantum criticality is a central challenge in correlated electron systems. The kagome metal CsV$_{3-x}$Ti$_x$Sb$_5$ provides a fertile platform to investigate the interplay between charge-density-wave (CDW) and superconductivity. Here, combining x-ray diffraction (XRD) and scanning tunneling microscopy (STM), we uncover a dimensional evolution of the CDW upon Ti substitution. We find that even infinitesimal Ti doping (x = 0.009) completely suppresses the three-dimensional 2 $\times$ 2 $\times$ 4 CDW present in pristine CsV3Sb5, while reducing the remaining 2 $\times$ 2 $\times$ 2 CDW to a quasi-two-dimensional order. With further Ti substitution, although no CDW transition is discernible in resistivity measurements, our XRD and STM data reveal the emergence of a (quasi-)one-dimensional CDW with a short correlation length of $\sim$ 20 $\AA$ at x = 0.2. The stripelike CDW undergoes a continuous second-order phase transition, characterized by a gradual increase in intensity and correlation length below $\sim$ 56 K. Our results elucidate the dimensional evolution of CDW order in CsV$_{3-x}$Ti$_x$Sb$_5$ and provide new insight into understanding the unconventional CDWs and their role in kagome superconductors.
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"abstract": "Understanding intertwined phases near quantum criticality is a central challenge in correlated electron systems. The kagome metal CsV$_{3-x}$Ti$_x$Sb$_5$ provides a fertile platform to investigate the interplay between charge-density-wave (CDW) and superconductivity. Here, combining x-ray diffraction (XRD) and scanning tunneling microscopy (STM), we uncover a dimensional evolution of the CDW upon Ti substitution. We find that even infinitesimal Ti doping (x = 0.009) completely suppresses the three-dimensional 2 $\\times$ 2 $\\times$ 4 CDW present in pristine CsV3Sb5, while reducing the remaining 2 $\\times$ 2 $\\times$ 2 CDW to a quasi-two-dimensional order. With further Ti substitution, although no CDW transition is discernible in resistivity measurements, our XRD and STM data reveal the emergence of a (quasi-)one-dimensional CDW with a short correlation length of $\\sim$ 20 $\\AA$ at x = 0.2. The stripelike CDW undergoes a continuous second-order phase transition, characterized by a gradual increase in intensity and correlation length below $\\sim$ 56 K. Our results elucidate the dimensional evolution of CDW order in CsV$_{3-x}$Ti$_x$Sb$_5$ and provide new insight into understanding the unconventional CDWs and their role in kagome superconductors.",
"arxiv_id": "2601.09257",
"authors": [
"Qian Xiao",
"Xiangqi Liu",
"Zihao Huang",
"Xiquan Zheng",
"Shilong Zhang",
"Hui Chen",
"Hong-Jun Gao",
"Yanfeng Guo",
"Yingying Peng"
],
"categories": [
"cond-mat.str-el",
"cond-mat.supr-con"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Evolution from three-dimensional charge density wave to one-dimensional stripe order in CsV$_{3-x}$Ti$_x$Sb$_5$",
"url": "https://arxiv.org/abs/2601.09257",
"version": "v1"
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"variant": "snapshot-2026-01-17",
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