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Quantum Chemistry
Tight binding studies on the electronic structure of toroidal carbon nanoscrolls in a magnetic field
DOAJ
Authors: WANG Zhao
Year
2019
Paper ID
73819
Status
Peer-reviewed
Abstract Read
~2 min
Abstract Words
97
Citations
N/A
Abstract
By restricting the periodic boundary condition of wave vector , the model of toroidal carbon nanoscrolls in a magnetic field is constructed on the basis of graphene tight-binding model, and its electronic structure properties are studied. The results show that the electronic structure with the magnetic flux Φ0 changes periodically with the magnetic flux Φ, which can be modulated into a metal or a bandgap semiconductor by controlling the chirality and magnetic field. The bandgap of zigzag toroidal carbon nanoscrolls with m = 3I (I is integer) is less affected by magnetic field, and the variation is only 7 μeV at m =18.
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- By restricting the periodic boundary condition of wave vector , the model of toroidal carbon nanoscrolls in a magnetic field is constructed on the basis of graphene...
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