Volume 120, Number 3, November 2017
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||30 January 2018|
Columnar aggregation of dipolar chains
Université de Lorraine, Laboratoire de Physique et Chimie Théoriques, UMR CNRS 7019 - 1 Boulevard Arago, 57070 Metz, France
Received: 11 December 2017
Accepted: 8 January 2018
We investigate the columnar aggregation of dipolar chains theoretically. At very small number of constitutive chains , ribbons are found to be stable. For a larger number of chains , chain bundles in zipper configuration with narrow sections emerge. The underlying lattice is always a body-centered tetragonal lattice which corresponds to the bulk ground-state limit. Remarkable low-energy ground states are obtained when the section of the chain bundle corresponds to a square or a rectangle with aspect ratio close to the former (i.e., unity). Our findings should rationalize recent experimental observations of the columnar assembly of dipolar chains.
PACS: 61.50.Lt – Crystal binding; cohesive energy / 64.75.Yz – Self-assembly / 61.46.Km – Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires)
© EPLA, 2018
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