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However, due to inherent magnetic moment, their valley characteristics are fixed and exhibit weak response to external perturbations, limiting their application in spintronics and valleytronics. Here, we manipulate the valley polarization and valley splitting of moir\u00e9 exciton utilizing magnetic proximity effect through constructing van der Waals heterostructure consisting of twisted WSe\n                    <jats:sub>2<\/jats:sub>\n                    homobilayers and ferromagnetic 1T\u2010VSe\n                    <jats:sub>2<\/jats:sub>\n                    . Photoluminescence measurements reveal that interfacial coupling deepens the moir\u00e9 potential by \u223c18% (from 45.33 to 53.57 meV). Furthermore, the magnetic proximity effect breaks the time\u2010reversal symmetry in twisted WSe\n                    <jats:sub>2<\/jats:sub>\n                    , producing a zero\u2010field valley splitting of \u223c0.9 meV, corresponding to an effective magnetic field of \u223c1.71 T. This coupling increases the Land\u00e9\n                    <jats:italic>g<\/jats:italic>\n                    \u2010factor of moir\u00e9 excitons and enhances the magnetic\u2010filed response of their valley polarization by approximately 200% and 300%, respectively. Temperature\u2010dependent measurements further reveal that the thermal evolution of valley polarization is governed by the spin thermodynamics of the ferromagnetic layer, marked by its sharp decrease with rising temperature. These findings establish the magnetic proximity modulation as a powerful and deterministic strategies to control valley pseudospins on a moir\u00e9 exciton, paving the way for the development of valleytronics and quantum spin devices.\n                  <\/jats:p>","DOI":"10.1002\/smll.74435","type":"journal-article","created":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T05:51:34Z","timestamp":1783317094000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Magnetic Proximity Engineering of Valley Pseudospins in a Twisted WSe\n                    <sub>2<\/sub>\n                    Moir\u00e9 Superlattices"],"prefix":"10.1002","volume":"22","author":[{"given":"Yixuan","family":"Chen","sequence":"first","affiliation":[{"name":"Institute of Quantum Physics School of Physics Central South University  Changsha Hunan P. R. China"},{"name":"State Key Laboratory of Precision Manufacturing For Extreme Service Performance Central South University  Changsha Hunan P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaofei","family":"Li","sequence":"additional","affiliation":[{"name":"Institute of Quantum Physics School of Physics Central South University  Changsha Hunan P. R. China"},{"name":"State Key Laboratory of Precision Manufacturing For Extreme Service Performance Central South University  Changsha Hunan P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shikun","family":"Hou","sequence":"additional","affiliation":[{"name":"Institute of Quantum Physics School of Physics Central South University  Changsha Hunan P. R. China"},{"name":"State Key Laboratory of Precision Manufacturing For Extreme Service Performance Central South University  Changsha Hunan P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xing","family":"Xie","sequence":"additional","affiliation":[{"name":"Institute of Quantum Physics School of Physics Central South University  Changsha Hunan P. R. China"},{"name":"State Key Laboratory of Precision Manufacturing For Extreme Service Performance Central South University  Changsha Hunan P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xian","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Quantum Physics School of Physics Central South University  Changsha Hunan P. R. China"},{"name":"State Key Laboratory of Precision Manufacturing For Extreme Service Performance Central South University  Changsha Hunan P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"He","sequence":"additional","affiliation":[{"name":"Institute of Quantum Physics School of Physics Central South University  Changsha Hunan P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zongwen","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Chemical and Biomolecular Engineering The University of Sydney  New South Wales Australia"},{"name":"The University of Sydney Nano Institute The University of Sydney  New South Wales Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2990-3783","authenticated-orcid":false,"given":"Yanping","family":"Liu","sequence":"additional","affiliation":[{"name":"Institute of Quantum Physics School of Physics Central South University  Changsha Hunan P. R. China"},{"name":"State Key Laboratory of Precision Manufacturing For Extreme Service Performance Central South University  Changsha Hunan P. R. China"},{"name":"Shenzhen Research Institute of Central South University  Shenzhen P. R. 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