University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Wednesday, September 23rd 2015
1:25 pm:
Speaker: Ivar Martin, Argonne
Subject: Mean field theory of (quasi)crystallization

Crystallization is one of the most familiar phase transitions; despite that, its theoretical understanding remains a major challenge. Why some crystal structures are more common than others? What selects between different close-packed orderings? Why do atoms sometimes prefer to arrange themselves quasi-periodically? While there is probably not a unique answer to these questions, in metallic alloys, I will argue that the driving physics may not be very different from that of various density (spin, charge, etc) instabilities within crystalline states.

Faculty Host: Rafael Fernandes

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