Complex Landau levels and related transport properties in the strained zigzag graphene nanoribbons
نویسندگان
چکیده
The real magnetic fields (MFs) acting on graphene can induce flat Landau levels (LLs). As an analogy, strains in produce significant pseudo MFs, triggering the appearance of dispersive LLs. By analyzing low-energy effective Hamiltonian, we introduce concept orbital MFs to integrate and MFs. Accordingly, obtain complex LLs which incorporate LLs, calculate related transport properties. These concepts enable us uncover mechanisms driving fragility against disorders dephasing, proving that tuning Fermi energy effectively improve robust performances. Furthermore, tunability valley-polarized currents is also studied, opening up new possibilities for design valleytronics devices.
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ژورنال
عنوان ژورنال: Physical review
سال: 2023
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.107.125411