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arXiv · 2004.03158

p Orbital flat band and Dirac cone in the electronic honeycomb lattice

Thomas S. Gardenier·Jette J. van den Broeke·Jesper R. Moes·Ingmar Swart·Christophe Delerue·Marlou R. Slot·Cristiane Morais Smith·Daniel Vanmaekelbergh
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Abstract

Theory anticipates that the in-plane px, py orbitals in a honeycomb lattice lead to new and potentially useful quantum electronic phases. So far, p orbital bands were only realized for cold atoms in optical lattices and for light and exciton-polaritons in photonic crystals. For electrons, in-plane p orbital physics is difficult to access since natural electronic honeycomb lattices, such as graphene and silicene, show strong s-p hybridization. Here, we report on electronic honeycomb lattices prepared on a Cu(111) surface in a scanning tunneling microscope that, by design, show (nearly) pure orbital bands, including the p orbital flat band and Dirac cone.

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Thomas S. Gardenier, Jette J. van den Broeke, Jesper R. Moes, Ingmar Swart, Christophe Delerue, Marlou R. Slot, Cristiane Morais Smith, Daniel Vanmaekelbergh. 2020-07-10. p Orbital flat band and Dirac cone in the electronic honeycomb lattice. https://doi.org/10.1021/acsnano.0c05747

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