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Mater."],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Modern short-scale information transmission mainly relies on dissipative charge transport, with electrons scattered by defects and phonons, leading to significant power losses. By contrast, excitons\u2014charge-neutral quasiparticles\u2014offer a playground for electro-optical energy-efficient information transduction and processing owing to their extended lifetimes, charge neutrality and efficient electrostatic control. In this work, we report the observation of fast exciton transport in a van der Waals heterostructure over distances exceeding 10\u2009\u00b5m, constrained only by the heterostructure finite size. We observe the presence of excitonic potential ramps that leads to long-range rapid exciton drift and enables rapid dilution of the initial exciton population. Our measurements reveal fast exciton propagation, with interlayer exciton drift velocities of approximately 2.66\u2009\u00d7\u200910\n                    <jats:sup>4<\/jats:sup>\n                    \u2009m\u2009s\n                    <jats:sup>\u22121<\/jats:sup>\n                    , within a transport regime that remains robust across a wide range of exciton densities and temperatures up to 150\u2009K. Our work opens avenues for the development of high-speed, energy-efficient excitonic devices, such as field-effect switches and modulators.\n                  <\/jats:p>","DOI":"10.1038\/s41563-026-02688-2","type":"journal-article","created":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T09:02:14Z","timestamp":1785315734000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fast interlayer exciton drift driven by lattice reconstruction in a van der Waals heterobilayer"],"prefix":"10.1038","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2588-7405","authenticated-orcid":false,"given":"Fedele","family":"Tagarelli","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8975-413X","authenticated-orcid":false,"given":"Edoardo","family":"Lopriore","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cristian","family":"de Giorgio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Erkensten","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2229-0147","authenticated-orcid":false,"given":"Ra\u00fcl","family":"Perea-Caus\u00edn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8823-1302","authenticated-orcid":false,"given":"Samuel","family":"Brem","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3701-8119","authenticated-orcid":false,"given":"Kenji","family":"Watanabe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1467-3105","authenticated-orcid":false,"given":"Takashi","family":"Taniguchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1434-9003","authenticated-orcid":false,"given":"Ermin","family":"Malic","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3426-7702","authenticated-orcid":false,"given":"Andras","family":"Kis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,7,29]]},"reference":[{"key":"2688_CR1","doi-asserted-by":"crossref","unstructured":"Duranton, M., Dutoit, D., Menezo, S. 3 - Key requirements for optical interconnects within data centers. 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