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Title: Magnetoreflection spectroscopy of monolayer transition-metal dichalcogenide semiconductors in pulsed magnetic fields

The authors describe recent experimental efforts to perform polarization-resolved optical spectroscopy of monolayer transition-metal dichalcogenide semiconductors in very large pulsed magnetic fields to 65 T. The experimental setup and technical challenges are discussed in detail, and temperature-dependent magnetoreflection spectra from atomically thin tungsten disulphide are presented. The data clearly reveal not only the valley Zeeman effect in these two-dimensional semiconductors but also the small quadratic exciton diamagnetic shift from which the very small exciton size can be directly inferred. Lastly, the authors present model calculations that demonstrate how the measured diamagnetic shifts can be used to constrain estimates of the exciton binding energy in this new family of monolayer semiconductors.
Authors:
ORCiD logo [1] ;  [2] ;  [2] ;  [3] ;  [1]
  1. National High Magnetic Field Lab., Los Alamos, NM (United States)
  2. Naval Research Lab., Washington, D.C. (United States)
  3. Rice Univ., Houston, TX (United States)
Publication Date:
Report Number(s):
LA-UR-16-23036
Journal ID: ISSN 2166-2746
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Vacuum Science and Technology. B, Nanotechnology and Microelectronics
Additional Journal Information:
Journal Volume: 34; Journal Issue: 4; Journal ID: ISSN 2166-2746
Publisher:
American Vacuum Society/AIP
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
National Science Foundation (NSF); USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; high magnetic field science
OSTI Identifier:
1340969

Stier, Andreas V., McCreary, Kathleen M., Jonker, Berend T., Kono, Junichiro, and Crooker, Scott A.. Magnetoreflection spectroscopy of monolayer transition-metal dichalcogenide semiconductors in pulsed magnetic fields. United States: N. p., Web. doi:10.1116/1.4948992.
Stier, Andreas V., McCreary, Kathleen M., Jonker, Berend T., Kono, Junichiro, & Crooker, Scott A.. Magnetoreflection spectroscopy of monolayer transition-metal dichalcogenide semiconductors in pulsed magnetic fields. United States. doi:10.1116/1.4948992.
Stier, Andreas V., McCreary, Kathleen M., Jonker, Berend T., Kono, Junichiro, and Crooker, Scott A.. 2016. "Magnetoreflection spectroscopy of monolayer transition-metal dichalcogenide semiconductors in pulsed magnetic fields". United States. doi:10.1116/1.4948992. https://www.osti.gov/servlets/purl/1340969.
@article{osti_1340969,
title = {Magnetoreflection spectroscopy of monolayer transition-metal dichalcogenide semiconductors in pulsed magnetic fields},
author = {Stier, Andreas V. and McCreary, Kathleen M. and Jonker, Berend T. and Kono, Junichiro and Crooker, Scott A.},
abstractNote = {The authors describe recent experimental efforts to perform polarization-resolved optical spectroscopy of monolayer transition-metal dichalcogenide semiconductors in very large pulsed magnetic fields to 65 T. The experimental setup and technical challenges are discussed in detail, and temperature-dependent magnetoreflection spectra from atomically thin tungsten disulphide are presented. The data clearly reveal not only the valley Zeeman effect in these two-dimensional semiconductors but also the small quadratic exciton diamagnetic shift from which the very small exciton size can be directly inferred. Lastly, the authors present model calculations that demonstrate how the measured diamagnetic shifts can be used to constrain estimates of the exciton binding energy in this new family of monolayer semiconductors.},
doi = {10.1116/1.4948992},
journal = {Journal of Vacuum Science and Technology. B, Nanotechnology and Microelectronics},
number = 4,
volume = 34,
place = {United States},
year = {2016},
month = {5}
}