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… 

Figures and Tables from this paper

Giant proximity exchange and valley splitting in transition metal dichalcogenide/ hBN /(Co, Ni) heterostructures
We investigate the proximity-induced exchange coupling in transition-metal dichalcogenides (TMDCs), originating from spin injector geometries composed of hexagonal boron-nitride (hBN) and
Magneto-optical Kerr effect in spin split two-dimensional massive Dirac materials
Two-dimensional (2D) massive Dirac electrons possess a finite Berry curvature, with Chern number $\pm 1/2$, that entails both a quantized dc Hall response and a subgap full-quarter Kerr rotation. The
Nano-chevron quantum dot for spin-qubit applications.
TLDR
The results show that such a system is experimentally feasible and would have comparable properties to that of more traditional silicon based spin-qubits, and the design of the device can be applied to other material systems beyond MoS2 and cobalt.
Enhancement of the Coercive Field and Exchange Bias Effect in Fe3GeTe2/MnPX3 (X = S and Se) van der Waals Heterostructures.
TLDR
By observing nearly three times enhancement of the coercive field, improvement of Curie temperature, and exchange bias effect in both heterostructures, these observations may provide new insights into the emergent heterostructure devices between itinerant ferromagnets and metal thio- and selenophosphates.
Estimation of the single-particle band gap and exciton binding energy in two dimensional insulators: a modified G0W0-BSE method approach
In this paper we present an alternative G$_0$W$_0$-BSE procedure, suitable for calculation of the quasi-particle and optical properties in 2D semiconductors. The method completely excludes the
Fabrication and Characterization of MoS2/h-BN and WS2/h-BN Heterostructures
TLDR
From the above experimental results, the preparation method of heterostructure material is efficient and scalable, which can provide the important support for the subsequent application of TMDs/h-BN heterost structure in nanoelectronics and optoelectronic.
Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials
TLDR
These heterostructures exhibit novel and unique optical characteristics at the stacking or junction, which can provide a reliable experimental basis for the preparation of suitable TMDs heterostructure materials with excellent performance.
Exciton energies and wave functions in hexagonal boron nitride using Miller and Good’s uniform approach
Abstract In this paper we revisit the work of Miller and Good, which describes an uniform JWKB type of approximation to the solution of quantum problems. This paper, very well known in atomic physics
Tunable Optical Properties of 2D Materials and Their Applications
Recent efforts have been heavily devoted to the development of next‐generation optoelectronic devices based on 2D materials, due to their unique optical properties that are distinctly different from
Engineering Proximity Exchange by Twisting: Reversal of Ferromagnetic and Emergence of Antiferromagnetic Dirac Bands in Graphene/Cr_{2}Ge_{2}Te_{6}.
We investigate the twist-angle and gate dependence of the proximity exchange coupling in twisted graphene on monolayer Cr_{2}Ge_{2}Te_{6} from first principles. The proximitized Dirac band
...
1
2
...

References

SHOWING 1-10 OF 37 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.
...
1
2
3
4
...