Fibrillar templates and soft phases in systems with short-range dipolar and long-range interactions

Details Fibrillar templates and soft phases in systems with short-range dipolar and long-range interactions Fibrillar templates and soft phases in systems with short-range dipolar and long-range interactions

2003-07-18

arxiv.org/abs/cond-mat/0307479v2

Phys. Rev. Lett. 92, 016801 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 postscript figures. Discussion of implications for experiment and theory has been expanded

Scientific paper

10.1103/PhysRevLett.92.016801

We analyze the thermal fluctuations of particles that have a short-range dipolar attraction and a long-range repulsion. In an inhomogeneous particle density region, or "soft phase," filamentary patterns appear which are destroyed only at very high temperatures. The filaments act as a fluctuating template for correlated percolation in which low-energy excitations can move through the stable pattern by local rearrangements. At intermediate temperatures, dynamically averaged checkerboard states appear. We discuss possible implications for cuprate superconducting and related materials.

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