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, C. Morais Smith, Daniel Vanmaekelbergh

Research output: Contribution to journalArticleAcademicpeer-review


Theory anticipates that the in-plane px, py orbitals in a honeycomb lattice lead to potentially useful quantum electronic phases. So far, p orbital bands were only realized for cold atoms in optical lattices and for light and excitonpolaritons 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.
Original languageEnglish
Pages (from-to)13638-13644
Number of pages7
JournalACS Nano
Issue number10
Publication statusPublished - 27 Oct 2020


  • Electronic lattice
  • Flat band
  • Honeycomb
  • Muffin-tin calculations
  • P orbital
  • Scanning tunneling microscopy (STM)
  • Scanning tunneling spectroscopy (STS)


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