Graphene nanoribbons on vicinal SiC surfaces by molecular beam epitaxy

Takashi Kajiwara, Yuzuru Nakamori, Anton Visikovskiy, Takushi Iimori, Fumio Komori, Kan Nakatsuji, Kazuhiko Mase, Satoru Tanaka

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We present a method of producing a densely ordered array of epitaxial graphene nanoribbons (GNRs) using vicinal SiC surfaces as a template, which consists of ordered pairs of (0001) terraces and nanofacets. Controlled selective growth of graphene on approximately 10 nm wide (0001) terraces with 10 nm spatial intervals allows GNR formation. By selecting the vicinal direction of SiC substrate, [11̄00], well-ordered GNRs with predominantly armchair edges are obtained. These structures, the high-density GNRs, enable us to observe the electronic structure at K points by angle-resolved photoemission spectroscopy, showing a clear band-gap opening of at least 0.14 eV.

Original languageEnglish
Article number121407
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number12
DOIs
Publication statusPublished - Mar 21 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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