Band Structure Evolution during Reversible Interconversion between Dirac and Standard Fermions in Organic Charge-Transfer Salts
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Le résumé fourni par la source
Materials containing Dirac fermions (DFs) have been actively researched because they often alter electrical and magnetic properties in an unprecedented manner. Although many studies have suggested the transformation between standard fermions (SFs) and DFs, the non-availability of appropriate samples has prevented the observation of the transformation process. We observed the interconversion process of DFs and SFs using organic charge-transfer (CT) salts. The samples are unique in that the constituents (the donor D and acceptor A species) are particularly close to each other in energy, leading to the temperature- and D-A-combination-sensitive CT interactions in the solid states. The three-dimensional weak D–A CT interactions in low-symmetry crystals induced the continuous reshaping of flat-bottomed bands into Dirac cones with decreasing temperature; this is a characteristic shape of bands that converts the behavior of SFs into that of DFs. Based on the first-principles band structures supported by the observed electronic properties, round-apex-Dirac-cone-like features appear and disappear with temperature variation. These band-structure snapshots are expected to add further detailed understanding to the related research fields.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Band Structure Evolution during Reversible Interconversion between Dirac and Standard Fermions in Organic Charge-Transfer Salts
- Date Crossref
- 09/06/2023
- Éditeur
- MDPI AG
- 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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Ehime University Research Unit for Materials Development for Efficient Utilization and Storage of Energy pays non établi dans la noticeUniversité ou école supérieure
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Hokkaido University pays non établi dans la noticeUniversité ou école supérieure
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Graduate School of Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
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Graduate School of Engineering pays non établi dans la noticeUniversité ou école supérieure
Research Unit for Materials Development for Efficient Utilization and Storage of Energy — Ehime University, Hokkaido University et Graduate School of Science and Engineering, avec 1 autre affiliation.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.