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  Preferential out-of-plane conduction and quasi-one-dimensional electronic states in layered 1T-TaS2

Martino, E., Pisoni, A., Ćirić, L., Arakcheeva, A., Berger, H., Akrap, A., et al. (2020). Preferential out-of-plane conduction and quasi-one-dimensional electronic states in layered 1T-TaS2. npj 2D Materials and Applications, 4(1): 7. doi:10.1038/s41699-020-0145-z.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-000B-77D3-1 Versions-Permalink: https://hdl.handle.net/21.11116/0000-000B-77D4-0
Genre: Zeitschriftenartikel

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externe Referenz:
https://doi.org/10.1038/s41699-020-0145-z (Verlagsversion)
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Keine Angabe

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 Urheber:
Martino, E.1, Autor
Pisoni, A.1, Autor
Ćirić, L.1, Autor
Arakcheeva, A.1, Autor
Berger, H.1, Autor
Akrap, A.1, Autor
Putzke, C.1, Autor
Moll, P. J. W.1, Autor
Batistić, I.1, Autor
Tutiš, E.1, Autor
Forró, L.1, Autor
Semeniuk, K.1, Autor
Affiliations:
1external, ou_persistent22              

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Schlagwörter: -
 Zusammenfassung: Layered transition metal dichalcogenides (TMDs) are commonly classified as quasi-two-dimensional materials, meaning that their electronic structure closely resembles that of an individual layer, which results in resistivity anisotropies reaching thousands. Here, we show that this rule does not hold for 1T-TaS2—a compound with the richest phase diagram among TMDs. Although the onset of charge density wave order makes the in-plane conduction non-metallic, we reveal that the out-of-plane charge transport is metallic and the resistivity anisotropy is close to one. We support our findings with ab initio calculations predicting a pronounced quasi-one-dimensional character of the electronic structure. Consequently, we interpret the highly debated metal-insulator transition in 1T-TaS2 as a quasi-one-dimensional instability, contrary to the long-standing Mott localisation picture. In a broader context, these findings are relevant for the newly born field of van der Waals heterostructures, where tuning interlayer interactions (e.g., by twist, strain, intercalation, etc.) leads to new emergent phenomena.

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Sprache(n): eng - English
 Datum: 2020
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1038/s41699-020-0145-z
 Art des Abschluß: -

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Titel: npj 2D Materials and Applications
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: London : Springer Nature
Seiten: - Band / Heft: 4 (1) Artikelnummer: 7 Start- / Endseite: - Identifikator: ISSN: 2397-7132
CoNE: https://pure.mpg.de/cone/journals/resource/2397-7132