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Modulation of Charge Density Waves in a Twirling Moiré Superlattice

  • Qian Fang
  • , Yanhao Shi
  • , Jingyi Duan
  • , Hui Guo*
  • , Yikai Chen
  • , Senhao Lv
  • , Jiayi Wang
  • , Zhongyi Cao
  • , Jiayi Huang
  • , Siyu Xu
  • , Haitao Yang
  • , Wei Jiang*
  • , Hui Chen*
  • , Hong Jun Gao
  • *Corresponding author for this work
  • CAS - Institute of Physics
  • School of Physical Sciences
  • University of Chinese Academy of Sciences
  • Beijing Institute of Technology
  • Beijing Institute of Technology (Zhuhai)

Research output: Contribution to journalLetterpeer-review

Abstract

Twisted moiré superlattices provide a powerful platform for engineering correlated electronic states, yet continuous nanoscale manipulation of collective orders remains largely unexplored. Here, we report the modulation of charge density wave (CDW) states in a twisted twirling moiré superlattice formed by monolayer VTe2 on superconducting NbSe2. Scanning tunneling microscopy/spectroscopy reveals that the intrinsic long-range CDW of monolayer VTe2 is reconstructed into inequivalent local phases with distinct stability and coherence within a single moiré unit cell, including suppressed CDW order and enhanced short-range CDW correlations persisting to room temperature. First-principles calculations attribute the reconstructed CDW landscape to strong local strain variation, with compressive strain significantly stabilizing the charge order. The reconstructed CDW further exhibits an anticorrelated modulation with proximity-induced superconductivity. Our results establish twirling moiré superlattices as a versatile platform for nanoscale manipulation of correlated electronic orders in low-dimensional quantum materials.

Original languageEnglish
Pages (from-to)10776-10784
Number of pages9
JournalNano Letters
Volume26
Issue number32
DOIs
Publication statusPublished - 19 Aug 2026
Externally publishedYes

Keywords

  • Charge density wave
  • Nanoscale modulation
  • Scanning tunneling microscopy
  • Strain engineering
  • Twirling moiré superlattice

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