Ab initio study of flexoelectricity in MXene monolayers
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912486006980608 |
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| author | Kumar, Shashikant Zhang, Zixi Suryanarayana, Phanish |
| author_facet | Kumar, Shashikant Zhang, Zixi Suryanarayana, Phanish |
| contents | We investigate flexoelectricity in MXene monolayers from first principles. Specifically, we compute the transverse flexoelectric coefficients of 126 MXene monolayers along their two principal directions using Kohn-Sham density functional theory. The values span a wide range from 0.19$e$ to 1.3$e$ and are nearly isotropic with respect to bending direction. The transition metal is found to play a significant role in the flexoelectric response, with nitride-based MXenes consistently displaying larger coefficients than their carbide counterparts. Moreover, the coefficients increase with structural thickness, but when normalized by the bending modulus, which is also computed for all 126 monolayers, they exhibit the opposite trend. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_12293 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ab initio study of flexoelectricity in MXene monolayers Kumar, Shashikant Zhang, Zixi Suryanarayana, Phanish Materials Science Mesoscale and Nanoscale Physics We investigate flexoelectricity in MXene monolayers from first principles. Specifically, we compute the transverse flexoelectric coefficients of 126 MXene monolayers along their two principal directions using Kohn-Sham density functional theory. The values span a wide range from 0.19$e$ to 1.3$e$ and are nearly isotropic with respect to bending direction. The transition metal is found to play a significant role in the flexoelectric response, with nitride-based MXenes consistently displaying larger coefficients than their carbide counterparts. Moreover, the coefficients increase with structural thickness, but when normalized by the bending modulus, which is also computed for all 126 monolayers, they exhibit the opposite trend. |
| title | Ab initio study of flexoelectricity in MXene monolayers |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.12293 |