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Dimensional confinement of such polar topological structures has the potential to increase device density and unlock novel functionalities. We report 180\u00b0 head-to-head and tail-to-tail CDWs exhibiting one-dimensional (1D) characteristics. These 1D CDWs are confined within the polar layers of ferroelectric ZrO\n                    <jats:sub>2<\/jats:sub>\n                    and have atomic-scale dimensions in both width and thickness. Quantitative analysis unveils a distinct screening mechanism of these walls whereby bound polarization charges are compensated by self-balancing oxygen occupancy. We demonstrate electric field\u2013driven manipulation of these 1D CDWs, revealing the microscopic coupling between polarization switching and oxygen-ion transport.\n                  <\/jats:p>","DOI":"10.1126\/science.aeb7280","type":"journal-article","created":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T19:00:48Z","timestamp":1769108448000},"page":"407-411","update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":15,"title":["Observation of one-dimensional, charged domain walls in ferroelectric ZrO\n                    <sub>2<\/sub>"],"prefix":"10.1126","volume":"391","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4544-9915","authenticated-orcid":true,"given":"Hai","family":"Zhong","sequence":"first","affiliation":[{"name":"Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China."},{"name":"School of Physics and Optoelectronic Engineering, Ludong 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