Structure and stability of finite gold nanowires

Abstract

Finite gold nanowires containing less than 1000 atoms are studied using the molecular dynamics simulation method and embedded atom potential. Nanowires with the face-centered cubic structure and the (111) oriented cross-section are prepared at T=0 K. After annealing and quenching the structure and vibrational properties of nanowires are studied at room temperature. Several of these nanowires form multi-walled structures of lasting stability. They consist of concentrical cylindrical sheets and resemble multi-walled carbon nanotubes. Vibrations are investigated by diagonalization of the dynamical matrix. It was found that several percents of vibrational modes are unstable because of uncompleted restructuring of initial fcc nanowires.

4 figures in gif format

References in corpus (4)

• Non-Crystalline Structures of Ultra-Thin Unsupported Nanowires
• Premelting of Thin Wires
• Fractal Conductance Fluctuations in Gold--Nanowires
• Role of Layering Oscillations at Liquid Metal Surfaces in Bulk Recrystallization and Surface Melting

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• Defects in ultrathin copper nanowires
• Multi-shell gold nanowires under compression
• Scaling of the conductance in gold nanotubes
• Electronic and magnetic properties of multishell Co nanowires coated with Cu