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Title: Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor

Abstract

In this paper, we report 65 T magnetoabsorption spectroscopy of exciton Rydberg states in the archetypal monolayer semiconductor WSe 2 . The strongly field-dependent and distinct energy shifts of the 2 s , 3 s , and 4 s excited neutral excitons permits their unambiguous identification and allows for quantitative comparison with leading theoretical models. Both the sizes (via low-field diamagnetic shifts) and the energies of the n s exciton states agree remarkably well with detailed numerical simulations using the nonhydrogenic screened Keldysh potential for 2D semiconductors. Finally and moreover, at the highest magnetic fields, the nearly linear diamagnetic shifts of the weakly bound 3 s and 4 s excitons provide a direct experimental measure of the exciton’s reduced mass m r = 0.20 ± 0.01 m 0 .

Authors:
 [1];  [2];  [3];  [4];  [2];  [1]
  1. National High Magnetic Field Lab. (MagLab), Los Alamos, NM (United States)
  2. Univ. of Washington, Seattle, WA (United States). Dept. of Physics
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Rice Univ., Houston, TX (United States). Dept. of Electrical and Computer Engineering. Dept. of Physics and Astronomy. Dept. of Materials Science and NanoEngineering
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of Washington, Seattle, WA (United States); National High Magnetic Field Lab. (MagLab), Los Alamos, NM (United States); Rice Univ., Houston, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR)
OSTI Identifier:
1475347
Alternate Identifier(s):
OSTI ID: 1419092
Report Number(s):
LA-UR-17-27395
Journal ID: ISSN 0031-9007
Grant/Contract Number:  
AC52-06NA25396; SC0018171; DMR-1157490; FA9550-14-1-0268
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 5; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; diamagnetism; excitons; magneto-optical spectra; Zeeman effect; 2-dimensional systems; transition-metal dichalcogenide

Citation Formats

Stier, A. V., Wilson, N. P., Velizhanin, K. A., Kono, J., Xu, X., and Crooker, S. A. Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.057405.
Stier, A. V., Wilson, N. P., Velizhanin, K. A., Kono, J., Xu, X., & Crooker, S. A. Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor. United States. https://doi.org/10.1103/PhysRevLett.120.057405
Stier, A. V., Wilson, N. P., Velizhanin, K. A., Kono, J., Xu, X., and Crooker, S. A. 2018. "Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor". United States. https://doi.org/10.1103/PhysRevLett.120.057405. https://www.osti.gov/servlets/purl/1475347.
@article{osti_1475347,
title = {Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor},
author = {Stier, A. V. and Wilson, N. P. and Velizhanin, K. A. and Kono, J. and Xu, X. and Crooker, S. A.},
abstractNote = {In this paper, we report 65 T magnetoabsorption spectroscopy of exciton Rydberg states in the archetypal monolayer semiconductor WSe2. The strongly field-dependent and distinct energy shifts of the 2s, 3s, and 4s excited neutral excitons permits their unambiguous identification and allows for quantitative comparison with leading theoretical models. Both the sizes (via low-field diamagnetic shifts) and the energies of the ns exciton states agree remarkably well with detailed numerical simulations using the nonhydrogenic screened Keldysh potential for 2D semiconductors. Finally and moreover, at the highest magnetic fields, the nearly linear diamagnetic shifts of the weakly bound 3s and 4s excitons provide a direct experimental measure of the exciton’s reduced mass mr=0.20±0.01m0.},
doi = {10.1103/PhysRevLett.120.057405},
url = {https://www.osti.gov/biblio/1475347}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 5,
volume = 120,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2018},
month = {Thu Feb 01 00:00:00 EST 2018}
}

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Cited by: 159 works
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Works referenced in this record:

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journal, October 2016


Berry phase modification to the energy spectrum of excitons
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Coulomb engineering of the bandgap and excitons in two-dimensional materials
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Works referencing / citing this record:

Dynamics of Free and Localized Excitons in Two‐Dimensional Transition Metal Dichalcogenides
journal, February 2019


Biexcitons in monolayer transition metal dichalcogenides tuned by magnetic fields
journal, September 2018


Revealing exciton masses and dielectric properties of monolayer semiconductors with high magnetic fields
journal, September 2019


Valley phonons and exciton complexes in a monolayer semiconductor
journal, January 2020


Dielectric disorder in two-dimensional materials
journal, August 2019


Light–valley interactions in 2D semiconductors
journal, July 2018


Visualizing electrostatic gating effects in two-dimensional heterostructures
journal, July 2019


Exciton diffusion in WSe 2 monolayers embedded in a van der Waals heterostructure
journal, April 2018


Magneto-spectroscopy of exciton Rydberg states in a CVD grown WSe 2 monolayer
journal, June 2019


Singlet and triplet trions in WS 2 monolayer encapsulated in hexagonal boron nitride
journal, June 2018


Dielectric impact on exciton binding energy and quasiparticle bandgap in monolayer WS 2 and WSe 2
journal, March 2019


Probing the exciton k-space dynamics in monolayer tungsten diselenides
journal, March 2019


High optical quality of MoS 2 monolayers grown by chemical vapor deposition
journal, November 2019


Theory of coherent pump–probe spectroscopy in monolayer transition metal dichalcogenides
journal, December 2019


k · p theory for phosphorene: Effective g -factors, Landau levels, and excitons
journal, September 2019


Multiphonon Raman scattering mediated by the exciton states in monolayer transition metal chalcogenides
journal, September 2019


Comment on “Excitons, trions, and biexcitons in transition-metal dichalcogenides: Magnetic-field dependence”
journal, March 2020


Common nonlinear features and spin-orbit coupling effects in the Zeeman splitting of novel wurtzite materials
journal, May 2019


Exciton States in Monolayer MoSe 2 and MoTe 2 Probed by Upconversion Spectroscopy
journal, September 2018


Common nonlinear features and spin-orbit coupling effects in the Zeeman splitting of novel wurtzite materials
text, January 2019


Strain-tunable orbital, spin-orbit, and optical properties of monolayer transition-metal dichalcogenides
text, January 2019


Common nonlinear features and spin-orbit coupling effects in the Zeeman splitting of novel wurtzite materials
text, January 2019


k.p theory for phosphorene: Effective g-factors, Landau levels, and excitons
text, January 2019