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ICMT Seminar: "Pattern Formation from Competing Interactions: Implications for Soft and Hard Condensed Matter Systems"

Event Type
Dept. of Physics
190 ESB
Feb 4, 2013   12:00 pm  
Charles Reichhardt (Los Alamos)
Originating Calendar
Physics - Institute for Condensed Matter Theory Seminar

I will give an overview of how systems with competing interactions such

as repulsion on one scale and attraction

on another can generically give rise to bubble, stripe, clump, and other

patterns.  The same patterns can occur for systems with purely repulsive

interactions provided there are two or more distinct length scales in

the potential. I will show how these patterns can arise in soft matter

systems, charge ordered systems, neutron stars in the form of pasta

phases, and vortex states in multi-band superconductors. Under

application of an external drive these systems can also exhibit numerous

nonequilibrium phase transitions that produce pronounced changes in the

transport properties. I will also discuss how pattern formation in these

systems can be influenced by a patterned substrate such as a periodic

array of two-dimensional pinning sites.

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