Pseudomagnetotransport in Strained Graphene
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916761843007488 |
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| author | Mreńca-Kolasińska, Alina De Beule, Christophe Shi, Jia-Tong Garcia-Ruiz, Aitor Kochan, Denis Richter, Klaus Liu, Ming-Hao |
| author_facet | Mreńca-Kolasińska, Alina De Beule, Christophe Shi, Jia-Tong Garcia-Ruiz, Aitor Kochan, Denis Richter, Klaus Liu, Ming-Hao |
| contents | In graphene, long-wavelength deformations that result in elastic shear strain couple to the low-energy Dirac electrons as pseudogauge fields. Using a scalable tight-binding model, we consider analogs to magnetotransport in mesoscopic strained graphene devices with nearly uniform pseudomagnetic fields. In particular, we consider transverse pseudomagnetic focusing in a bent graphene ribbon and show that a focused valley-polarized current can be generated with characteristic conductance oscillations. Importantly, our scaling method allows for quantum transport calculations with realistic device geometries, and leaves the Dirac physics and pseudogauge fields invariant as long as the atomic displacements vary slowly with respect to the scaled lattice. Our results show that pseudomagnetotransport is a promising new route for graphene straintronics, and our scaling method provides a new framework for the modeling, design, and interpretation of straintronics experiments and applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_21056 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Pseudomagnetotransport in Strained Graphene Mreńca-Kolasińska, Alina De Beule, Christophe Shi, Jia-Tong Garcia-Ruiz, Aitor Kochan, Denis Richter, Klaus Liu, Ming-Hao Mesoscale and Nanoscale Physics In graphene, long-wavelength deformations that result in elastic shear strain couple to the low-energy Dirac electrons as pseudogauge fields. Using a scalable tight-binding model, we consider analogs to magnetotransport in mesoscopic strained graphene devices with nearly uniform pseudomagnetic fields. In particular, we consider transverse pseudomagnetic focusing in a bent graphene ribbon and show that a focused valley-polarized current can be generated with characteristic conductance oscillations. Importantly, our scaling method allows for quantum transport calculations with realistic device geometries, and leaves the Dirac physics and pseudogauge fields invariant as long as the atomic displacements vary slowly with respect to the scaled lattice. Our results show that pseudomagnetotransport is a promising new route for graphene straintronics, and our scaling method provides a new framework for the modeling, design, and interpretation of straintronics experiments and applications. |
| title | Pseudomagnetotransport in Strained Graphene |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.21056 |