High-bias stability of monatomic chains

Abstract

For the metals Au, Pt and Ir it is possible to form freely suspended monatomic chains between bulk electrodes. The atomic chains sustain very large current densities, but finally fail at high bias. We investigate the breaking mechanism, that involves current-induced heating of the atomic wires and electromigration forces. We find good agreement of the observations for Au based on models due to Todorov and coworkers. The high-bias breaking of atomic chains for Pt can also be described by the models, although here the parameters have not been obtained independently. In the limit of long chains the breaking voltage decreases inversely proportional to the length.

7 pages, 5 figures

References in corpus (10)

• Quantum properties of atomic-sized conductors
• High-Field Electrical Transport in Single-Wall Carbon Nanotubes
• Formation and manipulation of a metallic wire of single gold atoms
• Mechanical properties and formation mechanisms of a wire of single gold atoms
• Common Origin for Surface Reconstruction and the Formation of Chains of Metal Atoms
• Onset of dissipation in ballistic atomic wires
• Theory of local heating in nanoscale conductors
• Calibration of the length of a chain of single gold atoms
• Origin Of Current-Induced Forces In An Atomic Gold Wire: A First Principles Study
• First-principles Simulations of the stretching and final breaking of Al nanowires: Mechanical properties and electrical conductance

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