Excitonic magneto-optical Kerr effect in two-dimensional transition metal dichalcogenides induced by spin proximity

@article{Henriques2020ExcitonicMK,
  title={Excitonic magneto-optical Kerr effect in two-dimensional transition metal dichalcogenides induced by spin proximity},
  author={J Henriques and Gonçalo Catarina and Ant{\'o}nio Manuel de Almeida Costa and Joaqu'in Fern'andez-Rossier and Nuno M. R. Peres},
  journal={Physical Review B},
  year={2020}
}
N.M.R.P. acknowledges support from the European Commission through the project “Graphene-Driven Revolutions in ICT and Beyond” (Ref. No. 785219), and the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Financing UID/FIS/04650/2019. In addition, N.M.R.P. acknowledges COMPETE2020, PORTUGAL2020, FEDER, and the Portuguese Foundation for Science and Technology (FCT) through Projects No. PTDC/FIS-NAN/3668/2013, No. POCI-01-0145-FEDER-028114, No. POCI-01-0145… 
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References

SHOWING 1-10 OF 40 REFERENCES
Valley Zeeman Splitting and Valley Polarization of Neutral and Charged Excitons in Monolayer MoTe2 at High Magnetic Fields.
Semiconducting transition metal dichalcogenides (TMDCs) give rise to interesting new phenomena in external magnetic fields, such as valley Zeeman splitting and magnetic-field-induced valley…
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.
Nonreciprocal Giant Magneto-Optic Effects in Transition-Metal Dichalcogenides without Magnetic Field.
TLDR
The results suggest that the presence of magnetic exchange coupling of transition-metal dichalcogenides represents an alternative strategy capable of inducing magnetoopitcal effects, which can be extended to other monolayer massive Dirac systems.
Proximity exchange effects in MoSe2 and WSe2 heterostructures with CrI3 : Twist angle, layer, and gate dependence
Proximity effects in two-dimensional (2D) van der Waals heterostructures offer controllable ways to tailor the electronic band structure of adjacent materials. Exchange proximity in particular is…
Proximity effects in superconductor-ferromagnet heterostructures
The proximity effect at superconductor-ferromagnet interfaces produces damped oscillatory behavior of the Cooper pair wave function within the ferromagnetic medium. This is analogous to the…
Excitonic effects in the optical properties of 2D materials:an equation of motion approach
We present a unified description of the excitonic properties of four monolayer transition-metal dichalcogenides (TMDC's) using an equation of motion method for deriving the Bethe–Salpeter equation in…
Excitonic linewidth approaching the homogeneous limit in MoS2-based van der Waals heterostructures
The strong light-matter interaction and the valley selective optical selection rules make monolayer (ML) MoS[subscript 2] an exciting 2D material for fundamental physics and optoelectronics…
Large valley polarization in monolayer MoTe2 on a magnetic substrate.
TLDR
This study explored valley polarization by depositing a heterostructure of a MoTe2 monolayer on the (0 0 1) surface of an antiferromagnetic RbMnCl3 substrate and found the magnitude of the valley splitting was found to be limited by the smaller SOC value and the induced exchange field, providing information on the enhancement of the Valley polarization.
Valley Manipulation by Optically Tuning the Magnetic Proximity Effect in WSe2/CrI3 Heterostructures.
TLDR
Wide continuous tuning of the valley polarization and valley Zeeman splitting with small changes in the laser-excitation power in heterostructures formed by monolayer WSe2 and 2D magnetic chromium triiodide (CrI3).
Ab initio calculated magneto-optical Kerr effect of ferromagnetic metals: Fe and Ni.
TLDR
This method is tested here on the ferromagnetic metals Fe and Ni and the results for Fe agree very well with experimental data and the magneto-optical polar Kerr rotation is predicted accurately.
...
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