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

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [3];  [1];  [1]
  1. Columbia Univ., New York, NY (United States)
  2. Elettra Sincrotrone Trieste, Trieste (Italy)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1182523
Alternate Identifier(s):
OSTI ID: 1180547
Report Number(s):
BNL-107531-2015-JA
Journal ID: ISSN 1098-0121; PRBMDO; R&D Project: 16083/16083; KC0403020
Grant/Contract Number:
SC00112704; FG 02-04-ER-46157; AC02-98CH10886; SC0012704; SC0001085
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 12; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Jin, Wencan, Yeh, Po -Chun, Zaki, Nader, Zhang, Datong, Liou, Jonathan T., Dadap, Jerry I., Barinov, Alexey, Yablonskikh, Mikhail, Sadowski, Jerzy T., Sutter, Peter, Herman, Irving P., and Osgood, Jr., 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., Dadap, Jerry I., Barinov, Alexey, Yablonskikh, Mikhail, Sadowski, Jerzy T., Sutter, Peter, Herman, Irving P., & Osgood, Jr., 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., Dadap, Jerry I., Barinov, Alexey, Yablonskikh, Mikhail, Sadowski, Jerzy T., Sutter, Peter, Herman, Irving P., and Osgood, Jr., Richard M. Tue . "Substrate interactions with suspended and supported monolayer MoS2: Angle-resolved photoemission spectroscopy". United States. doi:10.1103/PhysRevB.91.121409. https://www.osti.gov/servlets/purl/1182523.
@article{osti_1182523,
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 Dadap, Jerry I. and Barinov, Alexey and Yablonskikh, Mikhail and Sadowski, Jerzy T. and Sutter, Peter and Herman, Irving P. and Osgood, Jr., Richard M.},
abstractNote = {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.},
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}
}

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