Emergent Ferromagnetism and Spin Gapless Conductivity in Atomically Thin Co3Sn2S2 Nanosheets
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Le résumé fourni par la source
Spin-gapless semiconductors (SGSs) represent an intriguing class of quantum materials that bridge the gap between half-metallic ferromagnets and conventional semiconductors, offering promising avenues for spintronic applications. The discovery of intrinsic ferromagnetism in ultrathin two-dimensional van der Waals crystals has further fueled interest in exploring magnetism at the ultimate two-dimensional limit. Here, we demonstrate the growth of environmentally stable, atomically thin Co 3 Sn 2 S 2 nanosheets via a simple hydrothermal method. These nanosheets exhibit robust ferromagnetism with a Curie temperature of ∼100 K and remarkably, host a spin-gapless semiconducting (SGS) state, distinct from the well-known half-metallic Weyl ferromagnetism observed in the bulk counterpart. Structural analysis reveals that enhanced lattice distortion and strain effects in the nanosheets, induced by reduced dimensionality and surface defects, play a critical role in stabilizing this phase. Williamson-Hall analysis confirms the presence of strain, while DFT calculations reveal that strain-induced lattice distortions annihilate the Weyl points and the emergence of SGS semiconductivity. Charge transport measurements indicate a Mott variable-range hopping mechanism, while temperature-dependent conductivity suggests a coexistence of semiconducting and weakly gapless features. These findings not only establish atomically thin Co 3 Sn 2 S 2 nanosheets as a novel platform for SGS physics but also open up exciting possibilities for strain-engineered topological phases and next-generation spintronic and quantum technologies.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.
- Titre Crossref
- Emergent Ferromagnetism and Spin Gapless Conductivity in Atomically Thin Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub> Nanosheets
- Date Crossref
- 22/09/2025
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Indian Institute of Science Education and Research pays non établi dans la noticeUniversité ou école supérieure
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University of Nebraska–Lincoln Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience pays non établi dans la noticeUniversité ou école supérieure
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Jaypee Institute of Information Technology Department of Physics and Materials Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
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Max Planck Institute for Chemical Physics of Solids pays non établi dans la noticeStructure de recherche
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Synergy University Dubai pays non établi dans la noticeUniversité ou école supérieure
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Birla Institute of Technology and Science Department of General Science pays non établi dans la noticeUniversité ou école supérieure
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Department of Chemistry pays non établi dans la noticeInstitution
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Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience pays non établi dans la noticeInstitution
Indian Institute of Science Education and Research, Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience — University of Nebraska–Lincoln et Department of Physics and Materials Science and Engineering — Jaypee Institute of Information Technology, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.