NaxCoO2 and Related Oxides from the Perspective of their Electronic Structures
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If you have a question about this talk, please contact Michael Sutherland.
The layered oxide, NaxCoO2 shows a variety of behaviors that make it the subject of
much current debate. These include a complex phase diagram as a function of x. This
phase diagram has compositions with magnetism, metal insulator transitions, and most
remarkably, exceedingly high thermopower combined with high metallic conductivity.
Furthermore, upon hydration, the material becomes a superconductor whose nature is not
yet well understood. The purpose of this talk is to introduce this compound and its
properties using the electronic structure as a basis. Some properties, such as the
thermopower, and magneto-thermopower, appear to be understandable at the level of
standard electronic structure theory, while others remain mysterious. Some related oxides
that may have properties similar to NaxCoO2 are discussed.
This talk is part of the Quantum Matter Seminar series.
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