Data availability
Source data are provided with this paper for the main figures. Any further data that support the findings of this study are available from the corresponding authors on request.
Code availability
All of the codes used in this article are available from the corresponding authors on request.
References
Chui, S. & Tanatar, B. Impurity effect on the two-dimensional-electron fluid-solid transition in zero field. Phys. Rev. Lett. 74, 458 (1995).
Article
ADS
CAS
PubMed
Google Scholar
Thakur, J. & Neilson, D. Frozen electron solid in the presence of small concentrations of defects. Phys. Rev. B 54, 7674 (1996).
Article
ADS
CAS
Google Scholar
Chakravarty, S., Kivelson, S., Nayak, C. & Voelker, K. Wigner glass, spin liquids and the metal-insulator transition. Philos. Mag. B 79, 859–868 (1999).
Article
ADS
CAS
Google Scholar
Chitra, R., Giamarchi, T. & Le Doussal, P. Pinned Wigner crystals. Phys. Rev. B 65, 035312 (2001).
Article
ADS
Google Scholar
Giamarchi, T. in Strongly Correlated Fermions and Bosons in Low-Dimensional Disordered Systems (eds Lerner, I. V., Althsuler, B. L., Fal’ko, V. I. & Giamarchi, T.) 165–183 (Springer, 2002).
Kravchenko, S. & Sarachik, M. P. Metal–insulator transition in two-dimensional electron systems. Rep. Prog. Phys. 67, 1 (2003).
Article
ADS
Google Scholar
Chitra, R. & Giamarchi, T. Zero field Wigner crystal. Eur. Phys. J. B 44, 455–467 (2005).
Article
ADS
CAS
Google Scholar
Spivak, B., Kravchenko, S., Kivelson, S. & Gao, X. Colloquium: Transport in strongly correlated two dimensional electron fluids. Rev. Mod. Phys. 82, 1743–1766 (2010).
Article
ADS
CAS
Google Scholar
Vu, D. & Das Sarma, S. Thermal melting of a quantum electron solid in the presence of strong disorder: Anderson localization versus the Wigner crystal. Phys. Rev. B 106, L121103 (2022).
Article
ADS
CAS
Google Scholar
Ahn, S. & Das Sarma, S. Density-tuned effective metal-insulator transitions in two-dimensional semiconductor layers: Anderson localization or Wigner crystallization. Phys. Rev. B 107, 195435 (2023).
Article
ADS
CAS
Google Scholar
Reichhardt, C. & Reichhardt, C. Melting, reentrant ordering and peak effect for Wigner crystals with quenched and thermal disorder. New J. Phys. 25, 043016 (2023).
Article
ADS
CAS
Google Scholar
Huang, Y. & Das Sarma, S. Electronic transport, metal-insulator transition, and Wigner crystallization in transition metal dichalcogenide monolayers. Phys. Rev. B 109, 245431 (2024).
Article
ADS
CAS
Google Scholar
Wigner, E. On the interaction of electrons in metals. Phys. Rev. 46, 1002 (1934).
Article
ADS
CAS
Google Scholar
Tanatar, B. & Ceperley, D. M. Ground state of the two-dimensional electron gas. Phys. Rev. B 39, 5005 (1989).
Article
ADS
CAS
Google Scholar
Spivak, B. & Kivelson, S. A. Phases intermediate between a two-dimensional electron liquid and Wigner crystal. Phys. Rev. B 70, 155114 (2004).
Article
ADS
Google Scholar
Drummond, N. & Needs, R. Phase diagram of the low-density two-dimensional homogeneous electron gas. Phys. Rev. Lett. 102, 126402 (2009).
Article
ADS
CAS
PubMed
Google Scholar
Smith, C. et al. Unified variational approach description of ground-state phases of the two-dimensional electron gas. Phys. Rev. Lett. 133, 266504 (2024).
Article
ADS
MathSciNet
CAS
PubMed
Google Scholar
Dolgopolov, V. T. Quantum melting of a two-dimensional Wigner crystal. Phys. Uspekhi 60, 731–742 (2017).
Article
ADS
CAS
Google Scholar
Yoon, J., Li, C., Shahar, D., Tsui, D. & Shayegan, M. Wigner crystallization and metal-insulator transition of two-dimensional holes in GaAs at B = 0. Phys. Rev. Lett. 82, 1744 (1999).
Article
ADS
CAS
Google Scholar
Smoleński, T. et al. Signatures of Wigner crystal of electrons in a monolayer semiconductor. Nature 595, 53–57 (2021).
Article
ADS
PubMed
Google Scholar
Pack, J. et al. Charge-transfer contacts for the measurement of correlated states in high-mobility WSe2. Nat. Nanotechnol. 19, 948–954 (2024).
Article
ADS
CAS
PubMed
Google Scholar
Sung, J. et al. An electronic microemulsion phase emerging from a quantum crystal-to-liquid transition. Nat. Phys. 21, 437–443 (2025).
Article
CAS
Google Scholar
Das Sarma, S. et al. Two-dimensional metal-insulator transition as a percolation transition in a high-mobility electron system. Phys. Rev. Lett. 94, 136401 (2005).
Article
ADS
PubMed
Google Scholar
Li, H. et al. Imaging two-dimensional generalized Wigner crystals. Nature 597, 650–654 (2021).
Article
ADS
CAS
PubMed
Google Scholar
Li, H. et al. Wigner molecular crystals from multielectron moiré artificial atoms. Science 385, 86–91 (2024).
Article
ADS
CAS
PubMed
Google Scholar
Li, H. et al. Imaging tunable Luttinger liquid systems in van der Waals heterostructures. Nature 631, 765–770 (2024).
Article
ADS
CAS
PubMed
Google Scholar
Tsui, Y.-C. et al. Direct observation of a magnetic-field-induced Wigner crystal. Nature 628, 287–292 (2024).
Article
ADS
CAS
PubMed
Google Scholar
Xiang, Z. et al. Imaging quantum melting in a disordered 2D Wigner solid. Science 388, 736–740 (2025).
Article
ADS
CAS
PubMed
Google Scholar
Hossain, M. S. et al. Anisotropic two-dimensional disordered Wigner solid. Phys. Rev. Lett. 129, 036601 (2022).
Article
ADS
CAS
PubMed
Google Scholar
Hatke, A. et al. Wigner solid pinning modes tuned by fractional quantum Hall states of a nearby layer. Sci. Adv. 5, eaao2848 (2019).
Article
ADS
CAS
PubMed
PubMed Central
Google Scholar
Chen, Y. P. et al. Microwave resonance study of melting in high magnetic field Wigner solid. Int. J. Mod. Phys. B 21, 1379–1385 (2007).
Article
ADS
CAS
Google Scholar
Larentis, S. et al. Large effective mass and interaction-enhanced Zeeman splitting of K-valley electrons in MoSe2. Phys. Rev. B 97, 201407 (2018).
Article
ADS
CAS
Google Scholar
Barja, S. et al. Identifying substitutional oxygen as a prolific point defect in monolayer transition metal dichalcogenides. Nat. Commun. 10, 3382 (2019).
Article
ADS
PubMed
PubMed Central
Google Scholar
Schuler, B. et al. How substitutional point defects in two-dimensional WS2 induce charge localization, spin–orbit splitting, and strain. ACS Nano 13, 10520–10534 (2019).
Article
CAS
PubMed
Google Scholar
Aghajanian, M. et al. Resonant and bound states of charged defects in two-dimensional semiconductors. Phys. Rev. B 101, 081201 (2020).
Article
ADS
CAS
Google Scholar
Friedel, J. XIV. The distribution of electrons round impurities in monovalent metals. Lond. Edinb. Dublin Philos. Mag. J. Sci. 43, 153–189 (1952).
Article
CAS
Google Scholar
Simion, G. E. & Giuliani, G. F. Friedel oscillations in a Fermi liquid. Phys. Rev. B 72, 045127 (2005).
Article
ADS
Google Scholar
Li, J. & Wei, S.-H. Alignment of isovalent impurity levels: oxygen impurity in II-VI semiconductors. Phys. Rev. B 73, 041201 (2006).
Article
ADS
Google Scholar
Murphy, S., Lu, H. & Grimes, R. General relationships for isovalent cation substitution into oxides with the rocksalt structure. J. Phys. Chem. Solids 71, 735–738 (2010).
Article
ADS
CAS
Google Scholar
Falson, J. et al. Competing correlated states around the zero-field Wigner crystallization transition of electrons in two dimensions. Nat. Mater. 21, 311–316 (2022).
Article
CAS
PubMed
Google Scholar
Valenti, A. et al. Quantum geometry driven crystallization: a neural-network variational Monte Carlo study. Preprint at https://arxiv.org/abs/2512.07947 (2025).
Kim, J. et al. Neural-network quantum states for ultra-cold Fermi gases. Commun. Phys. 7, 148 (2024).
Article
Google Scholar
Li, C.-T., Ong, T., Geier, M., Lin, H. & Fu, L. Attention is all you need to solve chiral superconductivity. Preprint at https://arxiv.org/abs/2509.03683 (2026).
Linteau, D., Pescia, G., Nys, J., Carleo, G. & Holzmann, M. Phase diagram and crystal melting of helium-4 in two dimensions. Phys. Rev. Lett. 134, 246001 (2025).
Article
ADS
CAS
PubMed
Google Scholar
Qian, Y. et al. Describing Landau level mixing in fractional quantum Hall states with deep learning. Phys. Rev. Lett. 134, 176503 (2025).
Article
ADS
MathSciNet
CAS
PubMed
Google Scholar
Li, X. et al. Deep learning sheds light on integer and fractional topological insulators. Preprint at https://arxiv.org/abs/2503.11756 (2025).
Luo, D., Zaklama, T. & Fu, L. Solving fractional electron states in twisted MoTe2 with deep neural network. Preprint at https://arxiv.org/abs/2503.13585 (2025).
Li, X., Qian, Y., Ren, W., Xu, Y. & Chen, J. Emergent Wigner phases in moiré superlattice from deep learning. Commun. Phys. 8, 364 (2025).
Article
Google Scholar
Poduval, P. P. & Das Sarma, S. Anderson localization in doped semiconductors. Phys. Rev. B 107, 174204 (2023).
Article
ADS
CAS
Google Scholar
Download references
Acknowledgements
We acknowledge helpful discussions with I. Esterlis, S. Kivelson, V. Calvera, B. Skinner, S. Joy and S. Das Sarma.
Funding
This work was financed by the US Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division under contract DE-AC02-05-CH11231 within the van der Waals heterostructure programme KCWF16 (device fabrication, STM measurement). Support was also provided by the Department of Defense Vannevar Bush Faculty Fellowship N00014-23-1-2869 (surface preparation); National Science Foundation award DMR-2221750 (device characterization); and the Flatiron Institute, which is a division of the Simons Foundation (QMC simulation). Y.Y. acknowledges support from NSF DMR-2532734 (QMC simulation). S.A.T. acknowledges support from the US Department of Energy SC0020653 (excitonic metrology on transition metal dichalcogenide (TMD) crystals), NSF CBET 2330110 (environmental tests of TMD crystals) and Applied Materials, Inc. for defect/dopant analysis. K.W. and T.T. acknowledge support from the JSPS KAKENHI (grants 21H05233 and 23H02052) and World Premier International Research Center Initiative (WPI), MEXT, Japan for hBN crystal fabrication/characterization.
Author information
Author notes
These authors contributed equally: Zhehao Ge, Conor Smith, Zehao He
Authors and Affiliations
Department of Physics, University of California, Berkeley, Berkeley, CA, USA
Zhehao Ge, Zehao He, Qize Li, Ha-Leem Kim, Ziyu Xiang, Jianghan Xiao, Wenjie Zhou, Salman Kahn, Aining Hu, Feng Wang & Michael F. Crommie
Center for Computational Quantum Physics, Flatiron Institute, New York, NY, USA
Conor Smith, Yubo Yang, Miguel A. Morales & Shiwei Zhang
Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA
Conor Smith
Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
Zehao He, Ha-Leem Kim, Ziyu Xiang, Jianghan Xiao, Salman Kahn, Feng Wang & Michael F. Crommie
Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, USA
Zehao He
Department of Physics and Astronomy, Hofstra University, Hempstead, NY, USA
Yubo Yang
Graduate Group in Applied Science and Technology, University of California, Berkeley, Berkeley, CA, USA
Qize Li, Ziyu Xiang & Jianghan Xiao
Kavli Energy Nano Sciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, CA, USA
Ha-Leem Kim, Ziyu Xiang, Salman Kahn, Feng Wang & Michael F. Crommie
School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
Melike Erdi, Rounak Banerjee & Seth Ariel Tongay
Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
Takashi Taniguchi
Research Center for Electronic and Optical Materials, National Institute for Materials Science, Tsukuba, Japan
Kenji Watanabe
Authors
Zhehao Ge
Conor Smith
Zehao He
Yubo Yang
Qize Li
Ha-Leem Kim
Ziyu Xiang
Jianghan Xiao
Wenjie Zhou
Salman Kahn
Aining Hu
Melike Erdi
Rounak Banerjee
Takashi Taniguchi
Kenji Watanabe
Seth Ariel Tongay
Miguel A. Morales
Shiwei Zhang
Feng Wang
Michael F. Crommie
Contributions
Z.G., M.F.C. and F.W. conceived the work and designed the research strategy. Z.H., Q.L., Z.G. and W.Z. fabricated the BL-MoSe2 devices, with assistance from S.K. and A.H. Z.G. and Z.H. carried out STM measurements. C.S., Y.Y., M.A.M. and S.Z. performed NQS-QMC simulations. H.-L.K. performed BL-MoSe2 transport measurements. Z.G., Z.H., Q.L., Z.X., J.X., F.W. and M.F.C. discussed the experiment design and analysed the experimental data. M.E., R.B. and S.A.T. grew the MoSe2 crystals. K.W. and T.T. grew the hBN crystals. Z.G., M.F.C., F.W., C.S., Y.Y. and S.Z. wrote the paper. All authors commented on the paper.
Corresponding authors
Correspondence to
Zhehao Ge, Feng Wang or Michael F. Crommie.
Ethics declarations
Competing interests
The authors declare no competing interests.
Peer review
Peer review information
Nature thanks Shiyong Wang and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. Peer reviewer reports are available.
Additional information
Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
Reprints and permissions
About this article
Cite this article
Ge, Z., Smith, C., He, Z. et al. Visualizing the impact of quenched disorder on 2D electron Wigner solids.
Nature 654, 902–908 (2026). https://doi.org/10.1038/s41586-026-10654-w
Download citation
Received: 01 October 2025
Accepted: 12 May 2026
Published: 17 June 2026
Version of record: 17 June 2026
Issue date: 25 June 2026
DOI: https://doi.org/10.1038/s41586-026-10654-w
View original source — Nature ↗


