{"publication":"Nature Communications","abstract":[{"text":"Probing novel properties, arising from twisted interfaces, has traditionally relied on the stacking of exfoliated two-dimensional materials and the spontaneous formation of van der Waals bonds. So far, investigations involving intimate covalent or ionic bonds have not been a focus. Yet, we show here that an established technique, involving thermocompressional wafer bonding, works well for creating twisted non-van der Waals interfaces. We have successfully bonded z-cut lithium niobate single crystals to create ferroelectric oxide interfaces with strong polar discontinuities and have mapped the associated emergent interfacial conductivity. In some instances, a dramatic change in microstructure occurs, involving local dipolar switching. A twist-induced collapse in the capability of the system to effec8tively screen interfacial bound charge is implied. Importantly, this only occurs around specific moiré twist angles with sparse coincident lattices and associated short-range aperiodicity. In quasicrystals, aperiodicity is known to induce pseudo-bandgaps and we suspect a similar phenomenon here.","lang":"eng"}],"language":[{"iso":"eng"}],"issue":"1","quality_controlled":"1","year":"2026","date_created":"2026-03-08T09:20:13Z","publisher":"Springer Science and Business Media LLC","title":"Polar discontinuities, emergent conductivity, and critical twist-angle-dependent behaviour at wafer-bonded ferroelectric interfaces","type":"journal_article","status":"public","department":[{"_id":"15"},{"_id":"623"},{"_id":"288"}],"user_id":"22501","_id":"64864","article_type":"original","article_number":"1842","publication_identifier":{"issn":["2041-1723"]},"publication_status":"published","intvolume":"        17","citation":{"ama":"Rogers A, Holsgrove K, Schäfer NA, et al. Polar discontinuities, emergent conductivity, and critical twist-angle-dependent behaviour at wafer-bonded ferroelectric interfaces. <i>Nature Communications</i>. 2026;17(1). doi:<a href=\"https://doi.org/10.1038/s41467-026-68553-7\">10.1038/s41467-026-68553-7</a>","ieee":"A. Rogers <i>et al.</i>, “Polar discontinuities, emergent conductivity, and critical twist-angle-dependent behaviour at wafer-bonded ferroelectric interfaces,” <i>Nature Communications</i>, vol. 17, no. 1, Art. no. 1842, 2026, doi: <a href=\"https://doi.org/10.1038/s41467-026-68553-7\">10.1038/s41467-026-68553-7</a>.","chicago":"Rogers, Andrew, Kristina Holsgrove, Nils A. Schäfer, Boris Koppitz, Conor J. McCluskey, Shivani Yedama, Ronan Lynch, et al. “Polar Discontinuities, Emergent Conductivity, and Critical Twist-Angle-Dependent Behaviour at Wafer-Bonded Ferroelectric Interfaces.” <i>Nature Communications</i> 17, no. 1 (2026). <a href=\"https://doi.org/10.1038/s41467-026-68553-7\">https://doi.org/10.1038/s41467-026-68553-7</a>.","bibtex":"@article{Rogers_Holsgrove_Schäfer_Koppitz_McCluskey_Yedama_Lynch_Sloan_Porter_Sykes_et al._2026, title={Polar discontinuities, emergent conductivity, and critical twist-angle-dependent behaviour at wafer-bonded ferroelectric interfaces}, volume={17}, DOI={<a href=\"https://doi.org/10.1038/s41467-026-68553-7\">10.1038/s41467-026-68553-7</a>}, number={11842}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Rogers, Andrew and Holsgrove, Kristina and Schäfer, Nils A. and Koppitz, Boris and McCluskey, Conor J. and Yedama, Shivani and Lynch, Ronan and Sloan, Keelan and Porter, Barry and Sykes, Adam and et al.}, year={2026} }","mla":"Rogers, Andrew, et al. “Polar Discontinuities, Emergent Conductivity, and Critical Twist-Angle-Dependent Behaviour at Wafer-Bonded Ferroelectric Interfaces.” <i>Nature Communications</i>, vol. 17, no. 1, 1842, Springer Science and Business Media LLC, 2026, doi:<a href=\"https://doi.org/10.1038/s41467-026-68553-7\">10.1038/s41467-026-68553-7</a>.","short":"A. Rogers, K. Holsgrove, N.A. Schäfer, B. Koppitz, C.J. McCluskey, S. Yedama, R. Lynch, K. Sloan, B. Porter, A. Sykes, A. Catalan Daniels, R.S. Silva, F.Y. Bruno, S.D. Seddon, H. Lu, M. Rüsing, C. Fink, P. Fahler-Muenzer, S. Fearn, S.E.M. Heutz, M. Hadjimichael, Q.M. Ramasse, M. Alexe, A. Kumar, R.G.P. McQuaid, A. Gruverman, S. Sanna, L.M. Eng, J.M. Gregg, Nature Communications 17 (2026).","apa":"Rogers, A., Holsgrove, K., Schäfer, N. A., Koppitz, B., McCluskey, C. J., Yedama, S., Lynch, R., Sloan, K., Porter, B., Sykes, A., Catalan Daniels, A., Silva, R. S., Bruno, F. Y., Seddon, S. D., Lu, H., Rüsing, M., Fink, C., Fahler-Muenzer, P., Fearn, S., … Gregg, J. M. (2026). Polar discontinuities, emergent conductivity, and critical twist-angle-dependent behaviour at wafer-bonded ferroelectric interfaces. <i>Nature Communications</i>, <i>17</i>(1), Article 1842. <a href=\"https://doi.org/10.1038/s41467-026-68553-7\">https://doi.org/10.1038/s41467-026-68553-7</a>"},"volume":17,"author":[{"first_name":"Andrew","full_name":"Rogers, Andrew","last_name":"Rogers"},{"full_name":"Holsgrove, Kristina","last_name":"Holsgrove","first_name":"Kristina"},{"full_name":"Schäfer, Nils A.","last_name":"Schäfer","first_name":"Nils A."},{"full_name":"Koppitz, Boris","last_name":"Koppitz","first_name":"Boris"},{"first_name":"Conor J.","full_name":"McCluskey, Conor J.","last_name":"McCluskey"},{"last_name":"Yedama","full_name":"Yedama, Shivani","first_name":"Shivani"},{"first_name":"Ronan","last_name":"Lynch","full_name":"Lynch, Ronan"},{"first_name":"Keelan","full_name":"Sloan, Keelan","last_name":"Sloan"},{"first_name":"Barry","last_name":"Porter","full_name":"Porter, Barry"},{"full_name":"Sykes, Adam","last_name":"Sykes","first_name":"Adam"},{"last_name":"Catalan Daniels","full_name":"Catalan Daniels, Alex","first_name":"Alex"},{"first_name":"Romualdo S.","last_name":"Silva","full_name":"Silva, Romualdo S."},{"last_name":"Bruno","full_name":"Bruno, Flavio Y.","first_name":"Flavio Y."},{"first_name":"Sam D.","last_name":"Seddon","full_name":"Seddon, Sam D."},{"first_name":"Haidong","full_name":"Lu, Haidong","last_name":"Lu"},{"first_name":"Michael","id":"22501","full_name":"Rüsing, Michael","orcid":"0000-0003-4682-4577","last_name":"Rüsing"},{"first_name":"Christa","full_name":"Fink, Christa","last_name":"Fink"},{"last_name":"Fahler-Muenzer","full_name":"Fahler-Muenzer, Philipp","first_name":"Philipp"},{"last_name":"Fearn","full_name":"Fearn, Sarah","first_name":"Sarah"},{"first_name":"Sandrine E. M.","last_name":"Heutz","full_name":"Heutz, Sandrine E. M."},{"first_name":"Marios","last_name":"Hadjimichael","full_name":"Hadjimichael, Marios"},{"first_name":"Quentin M.","full_name":"Ramasse, Quentin M.","last_name":"Ramasse"},{"full_name":"Alexe, Marin","last_name":"Alexe","first_name":"Marin"},{"last_name":"Kumar","full_name":"Kumar, Amit","first_name":"Amit"},{"full_name":"McQuaid, Raymond G. P.","last_name":"McQuaid","first_name":"Raymond G. P."},{"first_name":"Alexei","full_name":"Gruverman, Alexei","last_name":"Gruverman"},{"first_name":"Simone","last_name":"Sanna","full_name":"Sanna, Simone"},{"first_name":"Lukas M.","last_name":"Eng","full_name":"Eng, Lukas M."},{"first_name":"J. Marty","last_name":"Gregg","full_name":"Gregg, J. Marty"}],"date_updated":"2026-03-08T09:22:25Z","oa":"1","doi":"10.1038/s41467-026-68553-7","main_file_link":[{"url":"https://www.nature.com/articles/s41467-026-68553-7","open_access":"1"}]}