Generalized Hamiltonian for Kekulé graphene and the emergence of valley-cooperative Klein tunneling

Generalized Hamiltonian for Kekulé graphene and the emergence of valley-cooperative Klein tunneling

We introduce a generalized Hamiltonian describing not only all topological phases observed experimentally in Kekulé graphene (KekGr) but predicting also new ones. These phases show features like a quadratic band crossing point, valley splitting, or the crossing of conduction bands, typically induce...

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Bibliographic Details
Main Authors: Betancur-Ocampo, Y. (Author), García, S.G.Y (Author), Stegmann, T. (Author)
Format: Article
Language:English
Published: American Physical Society 2022
Subjects:
Crossing point
Dirac fermions
Dispersion relations
Generalized hamiltonians
Graphene
Hamiltonians
Interaction fields
Klein Tunneling
Landforms
Rashba spin-orbit interactions
Topological phase
Topology
Valley splitting
Zeeman fields
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