Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled graphene
Abstract The mechanical strain has been widely exploited as an effective knob to induce various intriguing phenomena in two-dimensional materials, notably the emergence of pseudomagnetism and flexoelectricity. Here, using tight-binding model calculations supplemented with selective crosschecks withi...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-024-00716-5 |
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| author | Jinrong Xu Zhenyu Zhang Ping Cui |
| author_facet | Jinrong Xu Zhenyu Zhang Ping Cui |
| author_sort | Jinrong Xu |
| collection | DOAJ |
| description | Abstract The mechanical strain has been widely exploited as an effective knob to induce various intriguing phenomena in two-dimensional materials, notably the emergence of pseudomagnetism and flexoelectricity. Here, using tight-binding model calculations supplemented with selective crosschecks within first-principles theory, we present the first demonstration of coexisting pseudo magnetism and flexoelectricity in both rippled graphene monolayer and bilayer and further reveal the interplay of the strain-induced phenomena. For a rippled monolayer, lattice distortion induces the emergence of a synchronously modulated pseudomagnetic field, which in turn breaks the charge neutrality of the sublattices, as manifested by the concomitant presence of in-plane flexoelectricity. For a rippled bilayer, pseudomagnetism substantially enhances in some regions of the bottom layer and disappears in the corresponding regions of the top layer due to pronounced interlayer coupling, or vice versa, accompanied by simultaneous in-plane and out-of-plane polarizations with opposite directions. Collectively, these findings offer new opportunities for developing graphene-based multiferroic devices. |
| format | Article |
| id | doaj-art-6f199cfb378b4772b2e90d9f9e64f5a5 |
| institution | Kabale University |
| issn | 2397-4648 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj-art-6f199cfb378b4772b2e90d9f9e64f5a52024-12-22T12:12:50ZengNature Portfolionpj Quantum Materials2397-46482024-12-019111010.1038/s41535-024-00716-5Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled grapheneJinrong Xu0Zhenyu Zhang1Ping Cui2International Center for Quantum Design of Functional Materials (ICQD), Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaInternational Center for Quantum Design of Functional Materials (ICQD), Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaInternational Center for Quantum Design of Functional Materials (ICQD), Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of ChinaAbstract The mechanical strain has been widely exploited as an effective knob to induce various intriguing phenomena in two-dimensional materials, notably the emergence of pseudomagnetism and flexoelectricity. Here, using tight-binding model calculations supplemented with selective crosschecks within first-principles theory, we present the first demonstration of coexisting pseudo magnetism and flexoelectricity in both rippled graphene monolayer and bilayer and further reveal the interplay of the strain-induced phenomena. For a rippled monolayer, lattice distortion induces the emergence of a synchronously modulated pseudomagnetic field, which in turn breaks the charge neutrality of the sublattices, as manifested by the concomitant presence of in-plane flexoelectricity. For a rippled bilayer, pseudomagnetism substantially enhances in some regions of the bottom layer and disappears in the corresponding regions of the top layer due to pronounced interlayer coupling, or vice versa, accompanied by simultaneous in-plane and out-of-plane polarizations with opposite directions. Collectively, these findings offer new opportunities for developing graphene-based multiferroic devices.https://doi.org/10.1038/s41535-024-00716-5 |
| spellingShingle | Jinrong Xu Zhenyu Zhang Ping Cui Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled graphene npj Quantum Materials |
| title | Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled graphene |
| title_full | Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled graphene |
| title_fullStr | Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled graphene |
| title_full_unstemmed | Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled graphene |
| title_short | Coexistence and interplay of pseudomagnetism and flexoelectricity in few-layer rippled graphene |
| title_sort | coexistence and interplay of pseudomagnetism and flexoelectricity in few layer rippled graphene |
| url | https://doi.org/10.1038/s41535-024-00716-5 |
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