Lattice-decoupled rotatable stripe-like charge order within the strange metal phase of 2M-WS <sub>2</sub>
In quantum materials, charge orders typically stabilize in specific crystallographic orientations, though their formation mechanisms may vary. Here, using low-temperature scanning tunneling microscopy, we find a lattice-decoupled rotatable stripe-like charge order coexisting with superconductivity in 2M-WS<sub>2</sub>. The charge order manifests five distinct orientations across different sample regions, yet maintains an identical wavelength. This directional decoupling from host lattice challenges existing paradigms. First-principles calculations of phonon spectra and nesting function fail to explain the ordering mechanism. Intriguingly, the transition temperature of the charge orders exhibits spatial variations (21 to 46 K), coinciding with the temperature range of the recently reported strange metal phase in this material. This correlation suggests that the interplay between strong electronic correlations and electron-phonon coupling must be critically evaluated to elucidate the emergence of this unconventional charge order.
Authors
- Peizhe Tang (ORCID: https://orcid.org/0000-0002-6345-5809)
- Yuyang Wang (ORCID: https://orcid.org/0009-0001-9556-6001)
- Yating Hu (ORCID: https://orcid.org/0000-0003-2590-7066)
- Yuqiang Fang (ORCID: https://orcid.org/0000-0002-8259-4732)
- Fuqiang Huang (ORCID: https://orcid.org/0000-0003-0526-5473)
- Xiangang Wan (ORCID: https://orcid.org/0000-0001-7727-4980)
- Yucong Peng (ORCID: https://orcid.org/0000-0003-2150-151X)
- Wei Li (ORCID: https://orcid.org/0000-0003-4409-7185)
- Yunkai Guo
- Yongkang Ju (ORCID: https://orcid.org/0009-0008-1640-6191)
- Qi‐Kun Xue (ORCID: https://orcid.org/0009-0002-4429-3864)
- Kebin Xiao
- J.-B. Yan
- Daran Fu (ORCID: https://orcid.org/0009-0003-0201-9418)
Institutions
- Universität Hamburg (DE)
- Shanghai Jiao Tong University (CN)
- Southern University of Science and Technology (CN)
- Hefei University (CN)
- Center for Free-Electron Laser Science (DE)
- Max Planck Institute for the Structure and Dynamics of Matter (DE)
- Beijing Academy of Quantum Information Sciences (CN)
- Shanghai Institute of Ceramics (CN)
- Beihang University (CN)
- Nanjing University (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Proceedings of the National Academy of Sciences
- Published
- 2025-11-25
- DOI
- https://doi.org/10.1073/pnas.2513493122
- Citations
- 1
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.52