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Título

Strain Tuning of the Anisotropy in the Optoelectronic Properties of TiS3

AutorSilva-Guillén, José Ángel; Canadell, Enric ; Guinea, F. ; Roldán, Rafael
Palabras claveTransition metal trichalcogenides
2D materials
Strain
Anisotropy tuning
Plasmons
Optoelectronics
Fecha de publicación15-ago-2018
EditorAmerican Chemical Society
CitaciónACS Photonics 5(8): 3231-3237 (2018)
ResumenThe benefits of two-dimensional (2D) materials for applications in nanotechnology can be widened by exploiting the intrinsic anisotropy of some of those crystals, being black phosphorus the most well-known example. In this work we demonstrate that the anisotropy of TiS3, which is even stronger than that of black phosphorus, can be tuned by means of strain engineering. Using density functional theory calculations, we find that the ellipticity of the valence band can be inverted under moderate compressive strain, which is accompanied by an enhancement of the optical absorption. It is shown that the strain tuning of the band anisotropy can be exploited to focus plasmons in the desired direction, a feature that could be used to design TiS3 nanostructures with switchable plasmon channeling.
Versión del editorhttp://dx.doi.org/10.1021/acsphotonics.8b00467
URIhttp://hdl.handle.net/10261/169744
ISSN2330-4022
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