Issue |
Europhys. Lett.
Volume 75, Number 3, August 2006
|
|
---|---|---|
Page(s) | 489 - 495 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2005-10602-4 | |
Published online | 28 June 2006 |
Statics and dynamics of two-dimensional vortex liquid crystals
Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory Los Alamos, NM 87545, USA
Received:
28
November
2005
Accepted:
7
June
2006
With numerical simulations we examine static and dynamic properties
of two-dimensional vortices with anisotropic interactions. We find
evidence for a smectic-A phase in the absence of pinning. Quenched
disorder can induce a smectic-type state even at . When an
external drive is applied, a variety of novel anisotropic dynamical
flow states with distinct voltage signatures occur, including
elastic depinning in the hard direction and plastic depinning in the
easy direction. We compare our work to recent experiments on
two-dimensional colloids with anisotropic interactions. We also
discuss the implications of the anisotropic transport for other
systems which exhibit depinning phenomena, such as stripes and
electron liquid crystals.
PACS: 74.25.Qt – Vortex lattices, flux pinning, flux creep
© EDP Sciences, 2006
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