{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T07:40:45Z","timestamp":1792654845968,"version":"4.5.0"},"reference-count":36,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T00:00:00Z","timestamp":1792627200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T00:00:00Z","timestamp":1792627200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100020489","name":"Center for Hybrid, Active, and Responsive Materials, University of Delaware","doi-asserted-by":"publisher","award":["DMR\u20102011824"],"award-info":[{"award-number":["DMR\u20102011824"]}],"id":[{"id":"10.13039\/100020489","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["OIA\u20102217786"],"award-info":[{"award-number":["OIA\u20102217786"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["2543219"],"award-info":[{"award-number":["2543219"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Controlling magnetism with light in two\u2010dimensional van der Waals magnets could enable ultrafast, energy\u2010efficient spintronics. However, selectively writing distinct magnetic phases, such as chiral magnetic states (e.g., spin spirals and skyrmions) for memory and collinear states for logic, within a single material remains an outstanding challenge. Here, we demonstrate deterministic, photon\u2010energy\u2010selective writing of magnetic order in the air\u2010stable antiferromagnet chromium thiophosphate (). Its ligand\u2010to\u2010metal charge transfer gap serves as an intrinsic switching threshold: excitation below this gap drives \u2013 transitions to stabilize chiral magnetic states due to a spin\u2013spiral phase, while excitation above activates a photo\u2010doping mechanism that renormalizes magnetic exchange and induces a collinear phase. These optically defined states are distinguished through polarization\u2010resolved magneto\u2010optical spectroscopy and probed via a proximal monolayer tungsten diselenide (). By establishing optical selectivity in a single material, our work provides a reconfigurable platform for opto\u2010spintronic circuits where memory and logic functions can be dynamically toggled with\u00a0light.<\/jats:p>","DOI":"10.1002\/adma.75391","type":"journal-article","created":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T07:14:06Z","timestamp":1792653246000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Optically Tunable Chiral Magnetic States and Exchange Engineering via Charge\u2010Transfer Excitation in a van der Waals Antiferromagnet CrPS\n                    <sub>4<\/sub>"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-5450-0834","authenticated-orcid":false,"given":"Muhammad Hassan","family":"Shaikh","sequence":"first","affiliation":[{"name":"Department of Physics University of Delaware Newark Delaware USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3701-8119","authenticated-orcid":false,"given":"Kenji","family":"Watanabe","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science (NIMS) Tsukuba Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1467-3105","authenticated-orcid":false,"given":"Takashi","family":"Taniguchi","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science (NIMS) Tsukuba Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2393-0481","authenticated-orcid":false,"given":"Chitraleema","family":"Chakraborty","sequence":"additional","affiliation":[{"name":"Department of Physics University of Delaware Newark Delaware USA"},{"name":"Quantum Science and Engineering Program University of Delaware Newark Delaware USA"},{"name":"Department of Materials Science and Engineering University of Delaware Newark Delaware USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,22]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fmre.2022.03.016"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/s44306\u2010024\u201000029\u20100"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1063\/5.0206199"},{"key":"e_1_2_8_5_1","volume-title":"The Basics of Electron Transport in Spintronics: Textbook With Lectures, Exercises and Solutions","author":"Baltz 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Two\u2010Dimensional CrPS4${\\rm CrPS}_4$","volume":"16","author":"Kim S.","year":"2022","journal-title":"ACS Nano"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010020\u201020244\u20107"},{"issue":"44","key":"e_1_2_8_25_1","doi-asserted-by":"crossref","DOI":"10.1002\/adfm.202405882","article-title":"Interlayer Interaction of Excitons and Magnons in Graphene\/WS2${\\rm WS}_2$\/N\u00e9el\u2010Type Manganese Phosphorus Trichalcogenide Heterostructures","volume":"34","author":"Zhao S.\u2010X.","year":"2024","journal-title":"Advanced Functional Materials"},{"key":"e_1_2_8_26_1","doi-asserted-by":"crossref","first-page":"8099","DOI":"10.1021\/acs.nanolett.3c02129","article-title":"Layer\u2010Dependent Magnetism and Spin Fluctuations in Atomically Thin van der Waals Magnet CrPS4${\\rm CrPS}_4$","volume":"23","author":"Huang M.","year":"2023","journal-title":"Nano 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H.Shaikh A. P.Veettil C.Maurtua et\u00a0al. \u201cAnomalous Magneto\u2010Optical Response atRuO2${\\rm RuO}_2$\/WSe2${\\rm WSe}_2$van der Waals Interface.\u201d2026Preprint arXiv June 18. arXiv:2606.20262 [cond\u2010mat.mtrl\u2010sci]."}],"container-title":["Advanced Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/adma.75391","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/adma.75391","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/adma.75391","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T07:14:13Z","timestamp":1792653253000},"score":1,"resource":{"primary":{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/10.1002\/adma.75391"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,22]]},"references-count":36,"alternative-id":["10.1002\/adma.75391"],"URL":"https:\/\/doi.org\/10.1002\/adma.75391","archive":["Portico"],"relation":{},"ISSN":["0935-9648","1521-4095"],"issn-type":[{"value":"0935-9648","type":"print"},{"value":"1521-4095","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,22]]},"assertion":[{"value":"2026-05-06","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-10-08","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-10-22","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e75391"}}