{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T22:34:29Z","timestamp":1792103669296,"version":"4.4.0"},"reference-count":51,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"19","content-domain":{"domain":["www.science.org"],"crossmark-restriction":true},"short-container-title":["Sci. Adv."],"published-print":{"date-parts":[[2025,5,9]]},"abstract":"<jats:p>\n            Monolayer transition metal dichalcogenides have emerged as prominent candidates to explore the complex interplay between spin and valley degrees of freedom. Their strong spin-orbit interaction and broken inversion symmetry lead to the spin-valley locking effect, in which carriers occupying the\n            <jats:italic toggle=\"yes\">K<\/jats:italic>\n            and\n            <jats:italic toggle=\"yes\">K<\/jats:italic>\n            \u2032 valleys of the reciprocal space must have opposite spins. This effect is particularly strong for holes due to a larger spin-orbit gap in the valence band. By reducing the dimensionality of a monolayer of WSe\n            <jats:sub>2<\/jats:sub>\n            to 1D via electrostatic confinement, we demonstrate that spin-valley locking and strong hole-hole interactions lead to a ferromagnetic state where hole transport is spin-valley polarized, even without an applied magnetic field. A massive Dirac fermion model in the Hartree-Fock approximation reveals that many-body hole-exchange interactions lead to this polarized ground-state. This observation opens the possibility of implementing a robust and stable valley-polarized system, essential in valleytronic applications.\n          <\/jats:p>","DOI":"10.1126\/sciadv.adu4696","type":"journal-article","created":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T17:58:56Z","timestamp":1746640736000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":9,"title":["Valley-spin polarization at zero magnetic field induced by strong hole-hole interactions in monolayer WSe\n            <sub>2<\/sub>"],"prefix":"10.1126","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-9260-1686","authenticated-orcid":true,"given":"Justin","family":"Boddison-Chouinard","sequence":"first","affiliation":[{"name":"Quantum and Nanotechnologies Research Centre, National Research Council Canada, Ottawa, Ontario, K1A 0R6, Canada."},{"name":"Department of Physics, University of Ottawa, Ottawa, Ontario, K1N 9A7, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2238-336X","authenticated-orcid":true,"given":"Marek","family":"Korkusinski","sequence":"additional","affiliation":[{"name":"Quantum and Nanotechnologies Research Centre, National Research Council Canada, Ottawa, Ontario, K1A 0R6, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex","family":"Bogan","sequence":"additional","affiliation":[{"name":"Quantum and Nanotechnologies Research Centre, National Research Council Canada, Ottawa, Ontario, K1A 0R6, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pedro","family":"Barrios","sequence":"additional","affiliation":[{"name":"Quantum and Nanotechnologies Research Centre, National Research Council Canada, Ottawa, Ontario, K1A 0R6, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philip","family":"Waldron","sequence":"additional","affiliation":[{"name":"Quantum and Nanotechnologies Research Centre, National Research Council Canada, Ottawa, Ontario, K1A 0R6, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3701-8119","authenticated-orcid":true,"given":"Kenji","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1467-3105","authenticated-orcid":true,"given":"Takashi","family":"Taniguchi","sequence":"additional","affiliation":[{"name":"Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3638-3966","authenticated-orcid":true,"given":"Jaros\u0142aw","family":"Paw\u0142owski","sequence":"additional","affiliation":[{"name":"Institute of Theoretical Physics, Wroc\u0142aw University of Science and Technology, Wroc\u0142aw, Poland."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2908-4645","authenticated-orcid":true,"given":"Daniel","family":"Miravet","sequence":"additional","affiliation":[{"name":"Department of Physics, University of Ottawa, Ottawa, Ontario, K1N 9A7, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4651-3536","authenticated-orcid":true,"given":"Pawel","family":"Hawrylak","sequence":"additional","affiliation":[{"name":"Department of Physics, University of Ottawa, Ottawa, Ontario, K1N 9A7, Canada."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9537-4600","authenticated-orcid":true,"given":"Adina","family":"Luican-Mayer","sequence":"additional","affiliation":[{"name":"Department of Physics, University of Ottawa, Ottawa, Ontario, K1N 9A7, Canada."},{"name":"Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1929-2715","authenticated-orcid":true,"given":"Louis","family":"Gaudreau","sequence":"additional","affiliation":[{"name":"Quantum and Nanotechnologies Research Centre, National Research Council Canada, Ottawa, Ontario, K1A 0R6, 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