Plasmonic Effect on the Magneto-Optical Property of Monolayer WS2 Studied by Polarized-Raman Spectroscopy
Source abstract
Abstract
In recent years, the magneto-optical properties of two-dimensional transition metal disulfides have attracted more and more attention due to their further device applications in spintronics and valleytronics. However, to our knowledge, the plasmonic effect on the magneto-optical properties of WS2 has not been studied. In this work, monolayer WS2 transferred on SiO2/Si substrate and Au film were investigated respectively using polarized-Raman spectroscopy at 4 K under different magnetic fields. Prominent magnetic field–induced variations in the Raman intensities of WS2 samples were observed, which also exhibited significant differences in the spectral evolution versus magnetic field. The resonance magnetic field was 5 T and 5.5 T for the WS2 on SiO2/Si substrate and Au film, respectively. Remarkably, the magneto-optical Raman intensities of A1′ and 2LA(M) modes for WS2 on Au film were reduced to approximately 60% compared with that of WS2 on SiO2/Si. These results suggest that the plasmonic effect–induced charge transfer plays an important role in the magneto-optical Raman effect of WS2.
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Research context
OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · Plasmonic and Surface Plasmon Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China
Research Center of New Energy, Research Institute of Petroleum Exploration & Development, PetroChina, No. 20 Xueyuan Rd., Beijing 100083, China
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Songshan Lake Materials Laboratory, Dongguan 523808, China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China · Scientific Equipment Development Project of Chinese Academy of Sciences
References (46)
Show source-provided references
1. Electronics and optoelectronics of two-dimensional transition metal dichalcogenides10.1038/nnano.2012.193 ↗
2. Phonon and Raman scattering of two-dimensional transition metal dichalcogenides from monolayer, multilayer to bulk material10.1039/C4CS00282B ↗
3. Exciton physics and device application of two-dimensional transition metal dichalcogenide semiconductors
4. Evolution of electronic structure in atomically thin sheets of WS2 and WSe210.1021/nn305275h ↗
5. Influence of quantum confinement on the electronic structure of the transition metal sulfide TS210.1103/PhysRevB.83.245213 ↗
6. Chemically driven tunable light emission of charged and neutral excitons in monolayer WS210.1021/nn504196n ↗
7. Rational control of size and photoluminescence of WS2 quantum dots for white light-emitting diodes10.1021/acsami.8b17966 ↗
8. Vertical field-effect transistor based on graphene–WS2 heterostructures for flexible and transparent electronics10.1038/nnano.2012.224 ↗
9. Transistors with chemically synthesized layered semiconductor WS2 exhibiting 105 room temperature modulation and ambipolar behavior10.1063/1.4732522 ↗
10. Enhanced catalytic activity in strained chemically exfoliated WS2 nanosheets for hydrogen evolution10.1038/nmat3700 ↗
11. Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides10.1038/srep01608 ↗
12. Valley Zeeman effect in elementary optical excitations of monolayer WSe210.1038/nphys3203 ↗
13. Magnetic control of valley pseudospin in monolayer WSe 210.1038/nphys3201 ↗
14. Valley-and spin-polarized Landau levels in monolayer WSe210.1038/nnano.2016.213 ↗
15. Tuning valley polarization in a WSe2 monolayer with a tiny magnetic field
16. Magnetic-field-induced rotation of polarized light emission from monolayer WS210.1103/PhysRevLett.117.077402 ↗
17. Giant valley splitting in monolayer WS2 by magnetic proximity effect10.1038/s41467-019-11966-4 ↗
18. Discrete quantum dot like emitters in monolayer MoSe2: Spatial mapping, magneto-optics, and charge tuning10.1063/1.4945268 ↗
19. Magneto photoluminescence measurements of tungsten disulphide monolayers10.1088/1361-648X/aa55a9 ↗
20. Probing magnetic-proximity-effect enlarged valley splitting in monolayer WSe2 by photoluminescence10.1007/s12274-018-2148-z ↗
21. Valley Zeeman splitting of monolayer MoS2 probed by low-field magnetic circular dichroism spectroscopy at room temperature10.1063/1.5024766 ↗
22. Giant magneto-optical Raman effect in a layered transition metal compound10.1073/pnas.1601010113 ↗
23. Robust spin-valley polarization in commensurate MoS2/graphene heterostructures10.1103/PhysRevB.97.115445 ↗
24. Electronic structure-dependent magneto-optical Raman effect in atomically thin WS210.1088/2053-1583/aac593 ↗
25. Micro-Defects in Monolayer MoS2 Studied by Low-Temperature Magneto-Raman Mapping10.1021/acs.jpcc.0c04922 ↗
26. Hole mobility enhancement and p-doping in monolayer WSe2 by gold decoration10.1088/2053-1583/1/3/034001 ↗
27. Quantifying plasmon-enhanced light absorption in monolayer WS2 films10.1021/acsami.7b01947 ↗
28. Tailoring light-matter interaction in WS2–gold nanoparticles hybrid systems10.1103/PhysRevB.100.235438 ↗
29. Observation of forbidden phonons, Fano resonance and dark excitons by resonance Raman scattering in few-layer WS210.1088/2053-1583/aa79bb ↗
30. Quantitative Analysis of Temperature Dependence of Raman shift of monolayer WS210.1038/srep32236 ↗
31. Review on the Raman spectroscopy of different types of layered materials10.1039/C5NR07205K ↗
32. Spotting the differences in two-dimensional materials–the Raman scattering perspective10.1039/C7CS00874K ↗
33. Group theory analysis of phonons in two-dimensional transition metal dichalcogenides10.1103/PhysRevB.90.115438 ↗
34. Plasmon–phonon coupling in monolayer WS210.1063/1.4944948 ↗
35. Anisotropic metal nanoparticles for surface enhanced Raman scattering10.1039/C7CS00158D ↗
36. Integrated Freestanding Two-dimensional Transition Metal Dichalcogenides10.1002/adma.201700308 ↗
37. Highly stable and tunable chemical doping of multilayer WS2 field effect transistor: Reduction in contact resistance10.1021/acsami.5b06825 ↗
38. A review on Raman finger prints of doping and strain effect in TMDCs10.1016/j.mee.2019.111152 ↗
39. Transfer of monolayer TMD WS2 and Raman study of substrate effects10.1038/srep43037 ↗
40. Highly Enhanced Photoluminescence of Monolayer MoS2 with Self-Assembled Au Nanoparticle Arrays10.1002/admi.201700739 ↗
41. Plasmonic hot electron enhanced MoS2 photocatalysis in hydrogen evolution10.1039/C4NR07303G ↗
42. Evidence of Plasmon Enhanced Charge Transfer in Large-Area Hybrid Au-MoS2 Metasurface10.1002/adom.202000653 ↗
43. Probing the limits of plasmonic enhancement using a two-dimensional atomic crystal probe10.1038/s41377-018-0056-3 ↗
44. Brillouin-scattering: A tool for measurement of elastic and photoelastic constants10.1103/PhysRevB.6.639 ↗
45. Determination of elastic constants from sound-velocity measurements in crystals of general symmetry10.1063/1.1709328 ↗
46. High-mobility and high-optical quality atomically thin WS210.1038/s41598-017-14928-2 ↗