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  Local-field effects on the plasmon dispersion of two-dimensional transition metal dichalcogenides

Cudazzo, P., Gatti, M., & Rubio, A. (2013). Local-field effects on the plasmon dispersion of two-dimensional transition metal dichalcogenides. New Journal of Physics, 15(12): 125005. doi:10.1088/1367-2630/15/12/125005.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-F4EF-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0029-625C-E
Genre: Journal Article

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1367-2630_15_12_125005.pdf (Publisher version), 445KB
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 Creators:
Cudazzo, Pierluigi 1, Author
Gatti, Matteo 2, 3, Author
Rubio, Angel1, 4, Author           
Affiliations:
1Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento Fısica de Materiales, Universidad del Pa´ıs Vasco UPV/EHU, Centro de F´ısica de Materiales CSIC-UPV/EHU-MPC and DIPC, Avenida Tolosa 72, E-20018 San Sebasti´an, Spain, ou_persistent22              
2Laboratoire des Solides Irradiés, École Polytechnique, CNRS-CEA/DSM, F-91128 Palaiseau, France, ou_persistent22              
3Synchrotron SOLEIL, L’Orme des Merisiers, B.P. 48 Saint-Aubin, 91192 Gif-sur-Yvette, France, ou_persistent22              
4Theory, Fritz Haber Institute, Max Planck Society, ou_634547              

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 Abstract: Two-dimensional (2D) transition-metal dichalcogenides (TMDs) are gaining increasing attention as an alternative to graphene for their very high potential in optoelectronics applications. Here, we consider two prototypical metallic 2D TMDs, NbSe2 and TaS2. Using a first-principles approach, we investigate the properties of the localized intraband d plasmon that cannot be modeled on the basis of the homogeneous electron gas. Finally, we discuss the effects of the reduced dimensionality on the plasmon dispersion through the interplay between the interband transitions and the local-field effects. This result can be exploited to tune the plasmonic properties of these novel 2D materials.

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Language(s): eng - English
 Dates: 2013-05-3020132013-12-05
 Publication Status: Published online
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1367-2630/15/12/125005
 Degree: -

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Project name : DYNAMO - Dynamical processes in open quantum systems: pushing the frontiers of theoretical spectroscopy
Grant ID : 267374
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: New Journal of Physics
  Other : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol, UK : Institute of Physics Pub.
Pages: - Volume / Issue: 15 (12) Sequence Number: 125005 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666