Identifying hydrogen atoms on graphite

Tanglaw Roman, Wilson Agerico Diño, Hiroshi Nakanishi, Hideaki Kasai, Kunihiro Nobuhara, Tsuyoshi Sugimoto, Kyouichi Tange

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

We comment on the identification of a hydrogen atom adsorbed on graphite and distinguishing it from closely-spaced pairs under the scanning tunneling microscope (STM) through electronic state calculations based on density functional theory. The presence of the H atom should be very well observable through a distinct feature most directly associated with the adsorbate itself, a threefold symmetry most apparent through the third-nearest neighbor C atoms, and through sublattice visibility differences. A comparison with effects on the electronic states brought about by closely-spaced pairs shows visible differences in the aforementioned three factors, which should enable us to discriminate among adsorbed structures. Results compare well with STM measurements of adsorbed deuterium on graphite.

Original languageEnglish
Article number114703
Number of pages4
JournalJournal of the Physical Society of Japan
Volume76
Issue number11
DOIs
Publication statusPublished - Nov 2007
Externally publishedYes

Keywords

  • Defects
  • Deuterium
  • Graphene
  • Reconstruction
  • Resolution
  • Scanning tunneling microscopy
  • Surface states

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