Computer simulations suggest that ultrathin metal wires should develop exotic, non-crystalline stable atomic structures, once their diameter decreases below a critical size of the order of a few atomic spacings. The new structures, whose details depend upon the material and the wire thickness, may be dominated by icosahedral packings. Helical, spiral-structured wires with multi-atom pitches are also predicted. The phenomenon, analogous to the appearance of icosahedral and other non-crystalline shapes in small clusters, can be rationalized in terms of surface energy anisotropy and optimal packing.

Noncrystalline structures of ultrathin unsupported nanowires / Gulseren, O; Ercolessi, F; Tosatti, E. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 80:17(1998), pp. 3775-3778. [10.1103/PhysRevLett.80.3775]

Noncrystalline structures of ultrathin unsupported nanowires

Tosatti, E
1998-01-01

Abstract

Computer simulations suggest that ultrathin metal wires should develop exotic, non-crystalline stable atomic structures, once their diameter decreases below a critical size of the order of a few atomic spacings. The new structures, whose details depend upon the material and the wire thickness, may be dominated by icosahedral packings. Helical, spiral-structured wires with multi-atom pitches are also predicted. The phenomenon, analogous to the appearance of icosahedral and other non-crystalline shapes in small clusters, can be rationalized in terms of surface energy anisotropy and optimal packing.
1998
80
17
3775
3778
https://arxiv.org/abs/cond-mat/9803096
Gulseren, O; Ercolessi, F; Tosatti, E
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/30310
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