Mechano-switching devices from carbon wire-carbon nanotube junctions
2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 87, no 15, 155434-155442 p.Article in journal (Refereed) Published
Well-known conductive molecular wires, such as cumulene or polyyne, provide a model for interconnectingmolecular electronics circuits. In recent experiments, the appearance of carbon wire bridging between twodimensional electrodes, i.e., graphene sheets, was observed [C. Jinet al.,Phys. Rev. Lett.102, 205501 (2009)], thusdemonstrating a mechanical way of producing cumulene. In this work, we studied the structure and conductanceof carbon wire suspended between carbon nanotubes (CNTs) of different chiralities (zigzag and armchair), andcorresponding conductance variation upon stretching. We found that the geometric structure of the carbon wirebridging CNTs was similar to the experimentally observed structures in carbon wire obtained between grapheneelectrodes. We show a way to modulate conductance by changing bridging sites between carbon wire and CNTswithout breaking the wire. Observed current modulation via cumulene wire stretching or elongation together withCNT junction stability makes this a promising candidate for use in mechano-switching devices for molecularnanoelectronics.
Place, publisher, year, edition, pages
APS , 2013. Vol. 87, no 15, 155434-155442 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-198849DOI: 10.1103/PhysRevB.87.155434ISI: 000318177600005OAI: oai:DiVA.org:uu-198849DiVA: diva2:618283