title: Negative differential electrical resistance of a rotational organic nanomotor.
abstract: A robust, nanoelectromechanical switch is proposed based upon an asymmetric pendant moiety anchored to an organic backbone between two C60 fullerenes, which in turn are connected to gold electrodes. Ab initio density functional calculations are used to demonstrate that an electric field induces rotation of the pendant group, leading to a nonlinear current-voltage relation. The nonlinearity is strong enough to lead to negative differential resistance at modest source-drain voltages.
authors.affiliation: Quantum Technology Centre, Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
authors.forename: Hatef
authors.initials: H
authors.lastname: Sadeghi
authors.affiliation: Quantum Technology Centre, Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
authors.forename: Sara
authors.initials: S
authors.lastname: Sangtarash
authors.affiliation: Quantum Technology Centre, Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
authors.forename: Qusiy
authors.initials: Q
authors.lastname: Al-Galiby
authors.affiliation: Quantum Technology Centre, Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
authors.forename: Rachel
authors.initials: R
authors.lastname: Sparks
authors.affiliation: Quantum Technology Centre, Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
authors.forename: Steven
authors.initials: S
authors.lastname: Bailey
authors.affiliation: Quantum Technology Centre, Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
authors.forename: Colin J
authors.initials: CJ
authors.lastname: Lambert
keywords: molecular electronics; molecular switch