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Quasifreestanding single-layer hexagonal boron nitride as a substrate for graphene synthesis

Författare:
  • D. Usachov
  • V. K. Adamchuk
  • D. Haberer
  • A. Grueneis
  • H. Sachdev
  • Alexei Preobrajenski
  • C. Laubschat
  • D. V. Vyalikh
Publiceringsår: 2010
Språk: Engelska
Sidor:
Publikation/Tidskrift/Serie: Physical Review B
Volym: 82
Nummer: 7
Dokumenttyp: Artikel
Förlag: American Physical Society

Sammanfattning

We demonstrate that freeing a single-atom thick layer of hexagonal boron nitride (h-BN) from tight chemical bonding to a Ni(111) thin film grown on a W(110) substrate can be achieved by intercalation of Au atoms into the interface. This process has been systematically investigated using angle-resolved photoemission spectroscopy, x-ray photoemission, and absorption techniques. It has been demonstrated that the transition of the h-BN layer from the "rigid" into the "quasifreestanding" state is accompanied by a change in its lattice constant. Using chemical vapor deposition, graphene has been successfully synthesized on the insulating, quasifreestanding h-BN monolayer. We anticipate that the in situ synthesized weakly interacting graphene/h-BN double layered system could be further developed for technological applications and may provide perspectives for further inquiry into the unusual electronic properties of graphene.

Disputation

Nyckelord

  • Physics and Astronomy

Övriga

Published
Yes
  • ISSN: 1098-0121

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