Formation of defects in multirow Wigner crystals

Details Formation of defects in multirow Wigner crystals Formation of defects in multirow Wigner crystals

2011-02-25

arxiv.org/abs/1102.5303v1

Phys. Rev. B 84, 024117 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 8 figures

Scientific paper

10.1103/PhysRevB.84.024117

We study the structural properties of a quasi-one-dimensional classical Wigner crystal, confined in the transverse direction by a parabolic potential. With increasing density, the one-dimensional crystal first splits into a zigzag crystal before progressively more rows appear. While up to four rows the ground state possesses a regular structure, five-row crystals exhibit defects in a certain density regime. We identify two phases with different types of defects. Furthermore, using a simplified model, we show that beyond nine rows no stable regular structures exist.

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