Visualizing Electron Localization and Minibands in WS2/WSe2 Moiré Superlattices
- PC Department Online Seminar
- Datum: 29.11.2021
- Uhrzeit: 09:00
- Vortragende(r): Conrad Stansbury
- University of California, Berkeley
- Gastgeber: Tommaso Pincelli
![Visualizing Electron Localization and Minibands in WS<sub>2</sub>/WSe<sub>2</sub> Moiré Superlattices Visualizing Electron Localization and Minibands in WS<sub>2</sub>/WSe<sub>2</sub> Moiré Superlattices](/event_images/29696-1637243469.jpeg)
In this talk I will present our work on the heterobilayer WS2/WSe2
family combining nano-ARPES and optical reflectance contrast
spectroscopy to study the evolution of the electronic structure from the
weakly interacting, delocalized regime to a strongly localized regime,
as the superlattice constant is increased in the heterobilayer MX2/M’X’2 family. Our study points toward an unanticipated and significant role for
interlayer physics and hybridization in driving electron localization in
TMDC moiré superlattices. Together, these advance our current
understanding of electron localization in setting the preconditions for
emergence of correlated phases in superlattices, while opening the way
for study into more complex superlattice systems by direct,
momentum-aware spectroscopy.
Ref: DOI: 10.1126/sciadv.abf4387
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