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Colloquium
Emergent Phenomena in Complex Oxides under Spatial Confinement

日期:2010-11-24 阅读:1160

摘要

For condensed matter physicists, materials are often separated into two classes: simple materials and strongly correlated materials. Because the interested problems are very different, there is, traditionally, very little overlap between the two fields. However, in the world of reduced dimensionality, the line is no longer well defined. Simple materials can become complex, and complex materials can become even more complex, or, sometimes, simple. In this talk, I will use manganites to demonstrate how emergent phenomena appear in reduced dimensionality. The emergent phenomena mostly originate from the electronic phase separations (EPS) in the manganite system. Helped by spatial confinement, the nature of the EPS including their dynamics can be cleanly studied using conventional transport measurements. The formation process of the EPS can be also tuned by applying external strain and magnetic exchange field. It is hoped that these work will lead to a new field where the interplay between complexity and quantum effect will generate fascinating new properties for future technology.


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