Klein Tunneling in Uniaxial Strained Graphene under Super-Periodic Potential
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910889540583424 |
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| author | Shekhar, Sudhanshu Mandal, Bhabani Prasad Dutta, Anirban |
| author_facet | Shekhar, Sudhanshu Mandal, Bhabani Prasad Dutta, Anirban |
| contents | In this article, we employ the transfer matrix method (TMM) to analytically explore the impact of uniaxial strain on electron scattering in graphene under locally periodic and super-periodic electrostatic potential. Our study reveals that strain significantly influences electron transmission through the merging parameter $(δ)$, which modulates the Dirac cone positions. a positive merging parameter ($δ> 0$) reduces the transmission probability by opening an energy gap at the merging point, while a negative merging parameter ($δ< 0$) enhances transmission by bringing the Dirac cones closer, facilitating electron transport at certain angles. However, the resonance peaks in super-periodic potential (SPP) are sharper for $δ< 0$, making them more pronounced but increasingly difficult to resolve as the number of barriers increases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_17734 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Klein Tunneling in Uniaxial Strained Graphene under Super-Periodic Potential Shekhar, Sudhanshu Mandal, Bhabani Prasad Dutta, Anirban Mesoscale and Nanoscale Physics Quantum Physics In this article, we employ the transfer matrix method (TMM) to analytically explore the impact of uniaxial strain on electron scattering in graphene under locally periodic and super-periodic electrostatic potential. Our study reveals that strain significantly influences electron transmission through the merging parameter $(δ)$, which modulates the Dirac cone positions. a positive merging parameter ($δ> 0$) reduces the transmission probability by opening an energy gap at the merging point, while a negative merging parameter ($δ< 0$) enhances transmission by bringing the Dirac cones closer, facilitating electron transport at certain angles. However, the resonance peaks in super-periodic potential (SPP) are sharper for $δ< 0$, making them more pronounced but increasingly difficult to resolve as the number of barriers increases. |
| title | Klein Tunneling in Uniaxial Strained Graphene under Super-Periodic Potential |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2503.17734 |