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Title: Substrate interactions with suspended and supported monolayer Mo S 2 : Angle-resolved photoemission spectroscopy

Abstract

We report the directly measured electronic structure of exfoliated monolayer molybdenum disulfide ( Mo S 2 ) using micrometer-scale angle-resolved photoemission spectroscopy. Measurements of both suspended and supported monolayer Mo S 2 elucidate the effects of interaction with a substrate. A suggested relaxation of the in-plane lattice constant is found for both suspended and supported monolayer Mo S 2 crystals. For suspended Mo S 2 , a careful investigation of the measured uppermost valence band gives an effective mass at $$\bar{Γ}$$ and $$\bar{K}$$ of 2.00 m 0 and 0.43 m 0 , respectively. We also measure an increase in the band linewidth from the midpoint of $$\bar{Γ}$$ K to the vicinity of $$\bar{K}$$ and briefly discuss its possible origin.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Re-Defining Photovoltaic Efficiency Through Molecule Scale Control (RPEMSC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1370523
DOE Contract Number:  
SC0001085
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 91; Journal Issue: 12; Related Information: RPEMSC partners with Columbia University (lead); Brookhaven National Laboratory; Purdue University
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; solar (photovoltaic); electrodes - solar; charge transport; materials and chemistry by design; optics; synthesis (novel materials)

Citation Formats

Jin, Wencan, Yeh, Po-Chun, Zaki, Nader, Zhang, Datong, Liou, Jonathan T., Sadowski, Jerzy T., Barinov, Alexey, Yablonskikh, Mikhail, Dadap, Jerry I., Sutter, Peter, Herman, Irving P., and Osgood, Richard M.. Substrate interactions with suspended and supported monolayer MoS2 : Angle-resolved photoemission spectroscopy. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.91.121409.
Jin, Wencan, Yeh, Po-Chun, Zaki, Nader, Zhang, Datong, Liou, Jonathan T., Sadowski, Jerzy T., Barinov, Alexey, Yablonskikh, Mikhail, Dadap, Jerry I., Sutter, Peter, Herman, Irving P., & Osgood, Richard M.. Substrate interactions with suspended and supported monolayer MoS2 : Angle-resolved photoemission spectroscopy. United States. doi:10.1103/PhysRevB.91.121409.
Jin, Wencan, Yeh, Po-Chun, Zaki, Nader, Zhang, Datong, Liou, Jonathan T., Sadowski, Jerzy T., Barinov, Alexey, Yablonskikh, Mikhail, Dadap, Jerry I., Sutter, Peter, Herman, Irving P., and Osgood, Richard M.. Tue . "Substrate interactions with suspended and supported monolayer MoS2 : Angle-resolved photoemission spectroscopy". United States. doi:10.1103/PhysRevB.91.121409.
@article{osti_1370523,
title = {Substrate interactions with suspended and supported monolayer MoS2 : Angle-resolved photoemission spectroscopy},
author = {Jin, Wencan and Yeh, Po-Chun and Zaki, Nader and Zhang, Datong and Liou, Jonathan T. and Sadowski, Jerzy T. and Barinov, Alexey and Yablonskikh, Mikhail and Dadap, Jerry I. and Sutter, Peter and Herman, Irving P. and Osgood, Richard M.},
abstractNote = {We report the directly measured electronic structure of exfoliated monolayer molybdenum disulfide ( Mo S 2 ) using micrometer-scale angle-resolved photoemission spectroscopy. Measurements of both suspended and supported monolayer Mo S 2 elucidate the effects of interaction with a substrate. A suggested relaxation of the in-plane lattice constant is found for both suspended and supported monolayer Mo S 2 crystals. For suspended Mo S 2 , a careful investigation of the measured uppermost valence band gives an effective mass at $\bar{Γ}$ and $\bar{K}$ of 2.00 m 0 and 0.43 m 0 , respectively. We also measure an increase in the band linewidth from the midpoint of $\bar{Γ}$ K to the vicinity of $\bar{K}$ and briefly discuss its possible origin.},
doi = {10.1103/PhysRevB.91.121409},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 12,
volume = 91,
place = {United States},
year = {Tue Mar 17 00:00:00 EDT 2015},
month = {Tue Mar 17 00:00:00 EDT 2015}
}