Alternativer Identifier:
-
Verwandter Identifier:
-
Titel:
Heterogeneous Ta-dichalcogenide bilayer: heavy fermions or doped Mott physics?
Weitere Titel:
-
Beschreibung:
(Abstract) Controlling and understanding electron correlations in quantum matter is one of the most challenging tasks in materials engineering. In the past years a plethora of new puzzling correlated states have been found by carefully stacking and twisting two-dimensional van der Waals materials of different kind. Unique to these stacked structures is the emergence of correlated phases not foreseeable from the single layers alone. In Ta-dichalcogenide heterostructures made of a good metallic 1H- and a Mott-insulating 1T-layer, recent reports have evidenced a cross-breed itinerant and localized nature of the electronic excitations, similar to what is typically found in heavy fermion systems. Here, we put forward a new interpretation based on first-principles calculations which indicates a sizeable charge transfer of electrons (0.4-0.6 e) from 1T to 1H layers at an elevated interlayer distance. We accurately quantify the strength of the interlayer hybridization which allows us to unambiguously determine that the system is much closer to a doped Mott insulator than to a heavy fermion scenario. Ta-based heterolayers provide therefore a new ground for quantum-materials engineering in the regime of heavily doped Mott insulators hybridized with metallic states at a van der Waals distance.
Schlagworte:
Strongly correlated electron systems
Kondo insulator
TMDC Heterostructure
Density Functional Theory
Dynamical Mean-Field Theory
Zugehörige Informationen:
-
Sprache:
Englisch
Herausgeber/in:
Erstellungsjahr:
Fachgebiet:
Physics
Condensed Matter Theory
Objekttyp:
Dataset
Datenquelle:
(Other) Computer Simulation
Verwendete Software:
Software für Datenerhebung
Software:
VASP - 6.4.2
Alternative Software:
-
Verwendete Software:
Software für Datenerhebung
Software:
w2dynamics - 1.1.4
Alternative Software:
-
Datenverarbeitung:
-
Erscheinungsjahr:
Lizenz:
Förderung:
Deutsche Forschungsgemeinschaft - (QUAST FOR 5249) 449872909
European Research Council - (NonlinearTopo) 815869
Israel Science Foundation - (Personal Research Grant)(2932/21)
Office of Naval Research (N00014-23-1-2480)
Name Speichervolumen Metadaten Upload Aktion

Zugriffe der letzten sechs Monate

Aufrufe der Datenpaket-Seite

105


Downloads des Datenpakets

4


Gesamtstatistik

Zeitraum Aufrufe der Datenpaket-Seite Datenpaket heruntergeladen
März 2024 1 0
Feb. 2024 82 3
Jan. 2024 22 1
Dez. 2023 0 0
Nov. 2023 0 0
Okt. 2023 0 0
Vorher 0 0
Gesamt 105 4
Status:
Publiziert
Eingestellt von:
7351154dab1d835c1efa16643f75e854
Erstellt am:
Archivierungsdatum:
2024-01-23
Archivgröße:
49,5 MB
Archiversteller:
dd7b509482ad0a11773b217cbbcdf32f
Archiv-Prüfsumme:
959ad6d9bb77510297a3cac3d701bcd1 (MD5)
Ende des Embargo-Zeitraums:
-