Epitaxial graphene-encapsulated surface reconstruction of Ge(110)

Gavin P. Campbell, Brian Kiraly, Robert M. Jacobberger, Andrew J. Mannix, Michael S. Arnold, Mark C. Hersam, Nathan P. Guisinger, Michael J. Bedzyk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Understanding and engineering the properties of crystalline surfaces has been critical in achieving functional electronics at the nanoscale. Employing scanning tunneling microscopy, surface x-ray diffraction, and high-resolution x-ray reflectivity experiments, we present a thorough study of epitaxial graphene (EG)/Ge(110) and report a Ge(110) "6 × 2" reconstruction stabilized by the presence of epitaxial graphene unseen in group-IV semiconductor surfaces. X-ray studies reveal that graphene resides atop the surface reconstruction with a 0.34 nm van der Waals (vdW) gap and provides protection from ambient degradation.

Original languageEnglish (US)
Article number044004
JournalPhysical Review Materials
Volume2
Issue number4
DOIs
StatePublished - Apr 13 2018

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

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