Structure and electronic properties of molybdenum monoatomic wires encapsulated in carbon nanotubes

Details Structure and electronic properties of molybdenum monoatomic wires encapsulated in carbon nanotubes Structure and electronic properties of molybdenum monoatomic wires encapsulated in carbon nanotubes

2011-03-09

arxiv.org/abs/1103.2095v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 10 figures

Scientific paper

Monoatomic chains of molybdenum encapsulated in single walled carbon nanotubes of different chiralities are investigated using density functional theory. We determine the optimal size of the carbon nanotube for encapsulating a single atomic wire, as well as the most stable atomic arrangement adopted by the wire. We also study the transport properties in the ballistic regime by computing the transmission coefficients and tracing them back to electronic conduction channels of the wire and the host. We predict that carbon nanotubes of appropriate radii encapsulating a Mo wire have metallic behavior, even if both the nanotube and the wire are insulators. Therefore, encapsulating Mo wires in CNT is a way to create conductive quasi one-dimensional hybrid nanostructures.

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