Substrate interactions with suspended and supported monolayer MoS2: Angle-resolved photoemission spectroscopy
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Columbia Univ., New York, NY (United States)
- Elettra Sincrotrone Trieste, Trieste (Italy)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
We report the directly measured electronic structure of exfoliated monolayer molybdenum disulfide (MoS₂) using micrometer-scale angle-resolved photoemission spectroscopy. Measurements of both suspended and supported monolayer MoS₂ elucidate the effects of interaction with a substrate. Thus, a suggested relaxation of the in-plane lattice constant is found for both suspended and supported monolayer MoS₂ crystals. For suspended MoS₂, a careful investigation of the measured uppermost valence band gives an effective mass at Γ¯ and Κ¯ of 2.00m₀ and 0.43m₀, respectively. We also measure an increase in the band linewidth from the midpoint of Γ¯Κ¯ to the vicinity of Κ¯ and briefly discuss its possible origin.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Re-Defining Photovoltaic Efficiency Through Molecule Scale Control (RPEMSC)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704; SC0001085; FG 02-04-ER-46157; AC02-98CH10886
- OSTI ID:
- 1182523
- Alternate ID(s):
- OSTI ID: 1180547
- Report Number(s):
- BNL-107531-2015-JA; PRBMDO; R&D Project: 16083/16083; KC0403020
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 12; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 51 works
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