Universal Hall conductivity in graphene Maxwell fish-eye quantum dot
نویسندگان
چکیده
Graphene quantum dot with Maxwell fish eye potential energy profile is studied. A quasiclassical approximation used given that a slowly varying function of coordinates. Near the zero spectrum electron macroscopically degenerates. All trajectories are closed circles classified by angular momentum and an additional integral motion. Provided complete filling lower Dirac zone, universal value for Hall conductivity found.
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ژورنال
عنوان ژورنال: Physica E-low-dimensional Systems & Nanostructures
سال: 2022
ISSN: ['1386-9477', '1873-1759']
DOI: https://doi.org/10.1016/j.physe.2021.115103