Ming-Hao Liu
Department of Physics, National Cheng Kung University, Taiwan
Institute for Theoretical Physics, University of Regensburg, Germany
at 11 o'clock room 022 (Appelstraße 2, Building 3701)
Quantum transport simulations for experimentally sized graphene have been shown possible using the scalable tight-binding model [1]. Over the past decade, the scaling method has been widely applied in the scope of ballistic transport in clean graphene, including graphene superlattices [2]. Very recently, we have further generalized the scaling method to cover the scope of strained graphene [3], i.e., graphene lattices deformed by certain displacement fields. As predicted in early studies such as [4], strained graphene due to properly designed displacement fields exhibit energy spectra reminiscent of graphene under a magnetic field, known as the pseudomagnetic field. This talk conveys the main ideas illustrated in [3], including scaling invariant pseudomagnetic fields and transport simulations in mesoscopic strained graphene, and ends with reproducing the transport features reported in a recent experiment [5].
References
[1] M.-H. Liu et al., Phys Rev Lett 114, 036601 (2015).
[2] S.-C. Chen et al., Commun Phys 3, 71 (2020).
[3] A. Mrenca-Kolasinska et al., arXiv:2505.21056.
[4] F. Guinea et al., Nat Phys 6, 30 (2010).
[5] Zhang, X. et al., Nat Commun 13, 6711 (2022).