Julien Barrier

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Abstract The electronic quality of two-dimensional systems is crucial when exploring quantum transport phenomena. In semiconductor heterostructures, decades of optimization have yielded record-quality two-dimensional gases with transport and quantum mobilities reaching close to 108 and 106 cm2 V−1 s−1, respectively1,2,3,4,5,6,7,8,9,10. Although the quality of graphene devices has also been improving, it remains comparatively lower11,12,13,14,15,16,17.

Correction to: Nature Materials https://doi.org/10.1038/s41563-025-02180-3, published online 24 March 2025. In the version of this article initially published, there was an error in the Acknowledgements for Pablo Jarillo-Herrero, which has now been amended to read “P.J.-H. acknowledges funding for his sabbatical by CEX2019-000910-S [MCIN/AEI/10.13039/501100011033] Fundacio Cellex, Fundacio Mir-Puig, and Generalitat de Catalunya through CERCA” in the HTML and PDF versions of the article.