Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor.

@article{Stier2018MagnetoopticsOE,
  title={Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor.},
  author={Andreas V. Stier and N. P. Wilson and Kirill A. Velizhanin and Junichiro Kono and X. Xu and Scott A. Crooker},
  journal={Physical review letters},
  year={2018},
  volume={120 5},
  pages={
          057405
        }
}
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 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… 
View on PubMed
link.aps.org
146 Citations
Highly Influential Citations
5
Background Citations
19
Methods Citations
3
Results Citations
4

Figures from this paper

146 Citations

Citation Type

Citation Type

Magnetophotoluminescence of exciton Rydberg states in monolayer WSe2
Monolayer WSe$_2$ hosts a series of exciton Rydberg states denoted by the principal quantum number n = 1, 2, 3, etc. While most research focuses on their absorption properties, their optical emission…
Magnetoexcitons in monolayer transition-metal dichalcogenides
Magneto-spectroscopy of exciton Rydberg states in a CVD grown WSe2 monolayer
The results of magneto-optical spectroscopy investigations of excitons in a CVD grown monolayer of WSe2 encapsulated in hexagonal boron nitride are presented. The emission linewidth for the 1s state…
Excited Rydberg states in MoSe2/WSe2 heterostructures
The functional form of Coulomb interactions in the transition metal dichalcogenides (TDMs) and other van der Waals solids is critical to many of their unique properties, e.g. strongly-correlated…
Excited Rydberg States in TMD Heterostructures
The functional form of Coulomb interactions in the transition metal dichalcogenides and other van der Waals solids is critical to many of their unique properties, e.g. strongly-correlated electron…
Spatial extent of the excited exciton states in WS2 monolayers from diamagnetic shifts
We experimentally study the radii of excitons in hBN-encapsulated WS2 monolayers by means of magneto-optical reflectance spectroscopy at cryogenic temperatures in magnetic fields up to 29 T. We…
Excited-State Trions in Monolayer WS_{2}.
TLDR
An excited bound three-particle state is discovered appearing energetically below the 2s exciton in monolayer WS_{2}, using absorption spectroscopy and ab initio GW and Bethe-Salpeter equation calculations, establishing an optical fingerprint of trion-exciton resonance pairs.
Exciton States in Monolayer MoSe2 and MoTe2 Probed by Upconversion Spectroscopy
Transitions metal dichalcogenides (TMDs) are direct semiconductors in the atomic monolayer (ML) limit with fascinating optical and spin-valley properties. The strong optical absorption of up to 20 %…
Probing the exciton k-space dynamics in monolayer tungsten diselenides
Monolayer transition metal dichalcogenides (TMDs) provide 2D semiconductors with a rich interplay of electron spin and valley degrees of freedom. Along with strong optical coupling strength, it…
Interaction-Induced Shubnikov-de Haas Oscillations in Optical Conductivity of Monolayer MoSe_{2}.
We report polarization-resolved resonant reflection spectroscopy of a charge-tunable atomically thin valley semiconductor hosting tightly bound excitons coupled to a dilute system of fully spin- and…
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 85 REFERENCES
Exciton binding energy and nonhydrogenic Rydberg series in monolayer WS(2).
TLDR
Strong but unconventional electron-hole interactions are expected to be ubiquitous in atomically thin materials using a microscopic theory in which the nonlocal nature of the effective dielectric screening modifies the functional form of the Coulomb interaction.
Tightly bound excitons in monolayer WSe(2).
TLDR
The result reveals significantly reduced and nonlocal dielectric screening of Coulomb interactions in 2D semiconductors and will have a significant impact on next-generation photonics and optoelectronics applications based on 2D atomic crystals.
Exciton diamagnetic shifts and valley Zeeman effects in monolayer WS2 and MoS2 to 65 Tesla
TLDR
Low-temperature polarized reflection spectroscopy of atomically thin WS2 and MoS2 in high magnetic fields to 65 T is reported, thereby quantifying the valley Zeeman effect in monolayer transition-metal disulphides.
Observation of Excitonic Rydberg States in Monolayer MoS2 and WS2 by Photoluminescence Excitation Spectroscopy.
TLDR
These states are identified in monolayers of MoS2 and WS2 supported on fused silica by means of photoluminescence excitation spectroscopy and imply an exciton binding energy of 0.32 eV.
Excitons in 2H-WSe2 and 3R-WS2
The A exciton series in the liquid-nitrogen-temperature epsilon 2 spectra of 2H-WSe2 and 3R-WS2, derived from Kramers-Kronig analyses of normal-incidence, basal-plane reflectivity spectra, have been…
Magneto-optics in transition metal diselenide monolayers
We perform photoluminescence experiments at 4K on two different transition metal diselenide monolayers, namely MoSe2 and WSe2 in magnetic fields $B_z$ up to 9T applied perpendicular to the sample…
Optical Investigation of Monolayer and Bulk Tungsten Diselenide (WSe₂) in High Magnetic Fields.
Optical spectroscopy in high magnetic fields B ≤ 65 T is used to reveal the very different nature of carriers in monolayer and bulk transition metal dichalcogenides. In monolayer WSe2, the exciton…
Exciton band structure of monolayer MoS$_2$
We address the properties of excitons in monolayer MoS$_2$ from a theoretical point of view, showing that low-energy excitonic states occur both at the Brillouin zone center and at the Brillouin-zone…
Spin- and valley-dependent magneto-optical properties of MoS 2
We investigate the behavior of low-energy electrons in two-dimensional molybdenum disulfide when submitted to an external magnetic field. Highly degenerate Landau levels form in the material, between…
Exciton Binding Energy of Monolayer WS2
TLDR
An experimental approach to measuring the exciton binding energy of monolayer WS2 with linear differential transmission spectroscopy and two-photon photoluminescence excitation spectroscopic is reported.
...
1
2
3
4
5
...