Incommensurate double-walled carbon nanotubes as one-dimensional moiré crystals

Mikito Koshino, Pilkyung Moon, Young Woo Son

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

The cylindrical multishell structure is one of the prevalent atomic arrangements in nanowires. Being multishell, the well-defined atomic periodicity is hardly realized in it because the periodic units of individual shells therein generally do not match except for very few cases, posing a challenge to understanding its physical properties. Here we show that moiré patterns generated by superimposing atomic lattices of individual shells are decisive in determining its electronic structures. Double-walled carbon nanotubes, as an example, are shown to have spectacular variations in their electronic properties from metallic to semiconducting and further to insulating states depending on their moiré patterns, even when they are composed of only semiconducting nanotubes with almost similar energy gaps and diameters. Thus, aperiodic multishell nanowires can be classified into one-dimensional moiré crystals with distinct electronic structures.

Original languageEnglish
Article number035405
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number3
DOIs
Publication statusPublished - 2015 Jan 8

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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