Work function, deformation potential, and collapse of Landau levels in strained graphene and silicene
arXiv:2001.08938 · doi:10.1103/PhysRevB.101.245115
Abstract
We perform a systematic {\it ab initio} study of the work function and its uniform strain dependence for graphene and silicene for both tensile and compressive strains. The Poisson ratios associated with armchair and zigzag strains are also computed. Based on these results, we obtain the deformation potential, crucial for straintronics, as a function of the applied strain. Further, we propose a particular experimental setup with a special strain configuration that generates only the electric field, while the pseudomagnetic field is absent. Then, applying a real magnetic field, one should be able to realize experimentally the spectacular phenomenon of the collapse of Landau levels in graphene or related two-dimensional materials.
arXiv comment9 pages, 7 figures; final version published in PRB
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- Elastic Screening of Pseudogauge Fields in Graphene
- Density of states and differential entropy in Dirac materials in crossed magnetic and in-plane electric fields
- Zigzag edge states in graphene in the presence of in-plane electric field