Wednesday, May 9, 2012
APS Workshop 1
Spectroscopy of Rare-earth Materials at Extreme Conditions: Structure, Magnetism, and Energy
Organizers: Kevin Moore (Lawrence Livermore National Laboratory) and Daniel Haskel (Argonne National Laboratory)
Location: Building 401, Room A1100
This workshop explores emerging opportunities in the application of synchrotron-based x-ray absorption and inelastic scattering spectroscopies for studying the electronic and magnetic properties of rare-earth materials and their compounds. These materials provide a wonderful playground to explore correlated electron behavior (volume collapse, mixed valency, Kondo physics, superconductivity, magnetism) as well as enable a wide variety of applications in energy and information technologies (magnetocalorics, permanent magnets, spintronics). Particular emphasis will be placed on unraveling the potential of experimentation under extreme conditions, including high-pressure, high magnetic fields and fast timing within the context of the APS upgrade.
| Working Agenda |
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| Morning I: Historical Perspective, High Pressure (Chair: Guoyin Shen) |
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| 08:45 -- 09:00 |
Samuel Bader (Materials Science Division and Center for Nanoscale Materials, Argonne National Laboratory)
Historical Introduction to Rare Earth Research
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| 09:00 -- 09:40 |
James S. Schilling (Washington University in St. Louis)
Interplay between Magnetism and Superconductivity in Elemental Rare-Earth Metals and Related Kondo Alloys at High Pressures
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| 09:40 -- 10:20 |
Joseph A. Bradley (Condensed Matter and Materials Division, Lawrence Livermore National Laboratory)
X-ray Spectroscopy and Rare Earth Volume Collapse: High-fidelity Comparisons to Dynamical Mean Field Theory
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| 10:20 -- 10:45 |
Break |
Morning II: Energy (Chair: Jonathan Lang) |
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| 10:50 -- 11:30 |
Karl Gschneidner (The Ames Laboratory and Iowa State University)
Magnetic Refrigeration and Cooling - An Energy Efficient and Green Cooling Technology for the 21st Century
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| 11:30 -- 12:10 |
Sam Jiang (Argonne National Laboratory)
Thin Film Exchange-spring Magnets
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| 12:20 -- 01:25 |
Lunch |
Afternoon I: Fast Timing, High Magnetic Fields (Chair: Dave Keavney) |
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| 01:30 -- 02:10 |
Herman Durr (SLAC National Accelerator Laboratory)
The X-ray View of All Optical Magnetic Switching in FeCoGd
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| 02:10 -- 02:50 |
Yasuhiro Matsuda (University of Tokyo)
High Magnetic Field X-ray Spectroscopy of Heavy Fermion Systems
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| 02:50 -- 03:15 |
Break |
Afternoon II: High Magnetic Fields, High Pressure (Chair: Zahir Islam)
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| 03:20 -- 04:00 |
Jacob Ruff (Argonne National Laboratory)
Magnetoelastics of a Spin Liquid
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| 04:00 -- 04:40 |
Mohsen Abd-Elmeguid (University of Cologne)
Study of Quantum Phase Transitions in Rare Earth Compounds Using Mössbauer Spectroscopy
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| 04:40 -- 05:20 |
Narcizo M. Souza-Neto (Laboratório Nacional de Luz Síncrotron)
Re-entrant Valence Transition in EuO at High Pressures: Beyond the Bond-valence Model
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| 05:20 -- 05:30 |
Closing Remarks
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| 05:30 |
Adjourn |
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