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Spectral functions of CVD grown MoS2 monolayers after chemical transfer onto Au surface
DOI:
10.1016/j.apsusc.2020.147390
Authors:
Sung Won
Jung
(Diamond Light Source)
,
Sangyeon
Pak
(Sungkyunkwan University (SKKU))
,
Sanghyo
Lee
(University of Cambridge)
,
Sonka
Reimers
(Diamond Light Source; University of Nottingham)
,
Saumya
Mukherjee
(Diamond Light Source; University of Oxford)
,
Pavel
Dudin
(Diamond Light Source)
,
Timur K.
Kim
(Diamond Light Source)
,
Mattia
Cattelan
(University of Bristol)
,
Neil
Fox
(University of Bristol)
,
Sarnjeet S.
Dhesi
(Diamond Light Source)
,
Cephise
Cacho
(Diamond Light Source)
,
Seungnam
Cha
(Sungkyunkwan University (SKKU))
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Applied Surface Science
State:
Published (Approved)
Published:
July 2020
Diamond Proposal Number(s):
24367
,
22901
Abstract: The recent rise of van der Waals (vdW) crystals has opened new prospects for studying versatile and exotic fundamental physics with future device applications such as twistronics. Even though the recent development on Angle-resolved photoemission spectroscopy (ARPES) with Nano-focusing optics, making clean surfaces and interfaces of chemically transferred crystals have been challenging to obtain high-resolution ARPES spectra. Here, we show that by employing nano-ARPES with submicron sized beam and polystyrene-assisted transfer followed by annealing process in ultra-high vacuum environment, remarkably clear ARPES spectral features such as spin-orbit splitting and band renormalization of CVD-grown, monolayered MoS2 can be measured. Our finding paves a way to exploit chemically transferred crystals for measuring high-resolution ARPES spectra to observe exotic quasi-particles in vdW heterostructures.
Journal Keywords: MoS2 monolayer; nano-ARPES; chemical vapor deposition; polymer-assisted transfer; inelastic scattering
Subject Areas:
Materials,
Physics
Instruments:
I05-ARPES
,
I06-Nanoscience
Other Facilities: Bristol NanoESCA Facility
Discipline Tags:
Technical Tags: