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Título: | In-Plane Flexoelectricity in Two-Dimensional D3d Crystals |
Autor: | Springolo, Matteo; Royo Valls, Miquel; Stengel, Massimiliano CSIC ORCID | Palabras clave: | First-principles calculations Flexoelectricity Germanene Nanotubes |
Fecha de publicación: | 8-dic-2023 | Editor: | American Physical Society | Citación: | Physical Review Letters 131: 236203 (2023) | Resumen: | We predict a large in-plane polarization response to bending in a broad class of trigonal two-dimensional crystals. We define and compute the relevant flexoelectric coefficients from first principles as linear-response properties of the undistorted layer by using the primitive crystal cell. The ensuing response (evaluated for SnS_{2}, silicene, phosphorene, and RhI_{3} monolayers and for a hexagonal BN bilayer) is up to 1 order of magnitude larger than the out-of-plane components in the same material. We illustrate the topological implications of our findings by calculating the polarization textures that are associated with a variety of rippled and bent structures. We also determine the longitudinal electric fields induced by a flexural phonon at leading order in amplitude and momentum. | Versión del editor: | http://doi.org/10.1103/PhysRevLett.131.236203 | URI: | http://hdl.handle.net/10261/344030 | DOI: | 10.1103/PhysRevLett.131.236203 | ISSN: | 0031-9007 |
Aparece en las colecciones: | (ICMAB) Artículos |
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Springolo_PhysRevLett_2023_editorial.pdf | Artículo principal | 864,75 kB | Adobe PDF | Visualizar/Abrir |
Springolo_PhysRevLett_2023_suppl_editorial.pdf | Información complementaria | 2,47 MB | Adobe PDF | Visualizar/Abrir |
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