Argonne National Laboratory

Users Week 2008
May 4-8, 2008

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Workshop 7

Nanoscale phenomena near phase transitions

Thu. May 8, all day

Organizers: Martin Holt (CNM), Jorg Maser (APS and CNM), and Peter Abbamonte (University of Illinois at Urbana-Champaign)

To agenda > Updated 4/10/2008

The understanding and control of the nanoscopic properties of phase transitions in solids remains a great challenge for materials physics and an area of active research. Multiscale phenomena in materials exhibiting such behavior as superconductivity, piezoelectricity, ferromagnetism, or ferroelectricity arise from the complex interaction of these systems with their constituent nanostructure. This local, nanoscale critical phenomena can lead to interesting and unexpected behavior, in some cases dominating the macrostructural properties of the material. The development of new tools, such as nanoscale diffraction microscopy at the CNM hard x-ray nanoprobe, allows the observation of nanoscale critical behavior at previously unattainable spatial resolutions.

The aim of this workshop is to explore recent experimental and theoretical study in nanoscale phenomena of phase transitions. Experimental observation of the behavior of phase transitions in the presence of defects, domain boundaries, local disorder, and reduced dimensionality - and the implications of these results towards the development of modern theories of phase transitions will be discussed.


  Session I
9:00 - 9:15 Welcome and outlook
Eric Isaacs, Director of the Center for Nanoscale Materials
9:15 - 9:45 Phase transitions in complex systems
Leo Kadanoff, University of Chicago
9:45 - 10:15

Microscopic theory of correlated electronic systems
Peter Littlewood, University of Cambridge

10:15 - 10:45 Emergent behavior in correlated electronic systems
Steve Kivelson, Stanford University
10:45 - 11:00 Break
11:00 - 11:30 Imaging the two gaps in superconducting BSCO
Eric Hudson, Massachusetts Institute of Technology
11:30 - 12:00

Synchrotron x-ray assisted STM in magnetic systems
Volker Rose, Advanced Photon Source

12:00 - 1:30 Lunch
  Session II
1:30 - 2:00 Fine scale microstructure in active materials
Kaushik Bhattacharya, California Institute of Technology
2:00 - 2:30 Nanoscale structure and dynamics of ferroic thin films
Ramamoorthy Ramesh, University of California Berkeley
2:30 - 3:00 Reversible strain experiments in complex oxide films
Kathrin Dorr, IFW Dresden
3:00 - 3:15


3:15 - 3:45 Domain wall dynamics in quantum antiferromagnets
Oleg Shpyrko, University of California San Diego
3:45 - 4:15 Nanoscale imaging of metallic precursors in VO2
Mumtaz Qazilbash, University of California San Diego
4:15 - 4:30 Summary and discussion
Martin Holt, Center for Nanoscale Materials
4:30 Adjourn


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