Speaker
Ishita Pushkarna
(Université de Genève)
Description
Transition metal dichalcogenides like molybdenum disulphide (MoS2) have been studied on metal surfaces, but little is known about twist angle-dependent electronic properties of these simple heterostructures, which indeed offers tremendous opportunities to design functional quantum materials. In this talk, we present a detailed scanning tunnelling microscopy and spectroscopy investigation of electronic properties of monolayer MoS2 on gold as a function of twist angle. We find that the semi-conducting band edges and hence the band gap are modulated at the moiré wavelength (moiré between MoS2 and gold) and this modulation progressively vanishes with increasing twist angle.
Authors
Ishita Pushkarna
(Université de Genève)
Arpad Pasztor
(University of Geneva)
Christoph Renner
(University of Geneva)
