Please join us as we welcome Professor Jak Chakhalian, for a special CEM Seminar on “Correlated Electrons at the Interfaces of Complex Oxides”.
October 5, 4-5 pm in the Smith Seminar Room of the Physics Research Building (191 West Woodruff Ave)
light reception before the seminar starting at 3:30 pm
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CORRELATED ELECTRONS AT THE INTERFACES OF COMPLEX OXIDES
Jak Chakhalian
University of Arkansas, Physics Department and Canter for Nanoscale Materials,
Fayetteville, AR 72701, USA
Complex oxides are a class of materials characterized by a variety of competing interactions that create a subtle balance to define the lowest energy state and lead to a wide diversity of interesting properties (e.g. high Tc superconductivity, exotic magnetism,…). By utilizing the bulk properties of these materials as a starting point, interfaces between different classes of correlated oxides offer a unique opportunity to break the symmetries present in the bulk and alter the local environment. Using our ability to growth multilayered structures with unit cell precision, we can now combine materials with distinctly different and even competing orders to create new materials and quantum states. The broken symmetry, strain, and altered chemical environments at the interfaces then provide a unique laboratory to manipulate this subtle balance to create novel states and structures not attainable in bulk. Understanding of these electronic phases however requires detailed microscopic studies of the heterostructure properties. Here I will touch on several recent examples of interfaces of correlated cuprates, manganites and nickelates to illustrate how the application of synchrotron radiation offers the ability to probe bulk vs. interface properties to gain exclusive insight into the exciting underlying physics.