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Zernike Institute for Advanced Materials Colloquium David J. Singh

Roster

WhenWhere
05 November 2009 FWN-Building 5111.0080, Nijenborgh 4, 9747 AG, Groningen
Speaker: Prof. Dr. David J. Singh
Affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, USA
Title:
Physics and Chemistry of Superconductivity in the Iron Age
Date: Thu Nov 5, 2009
Start: 16.00 (Doors open and coffee available at 15.30)
Location: FWN-Building 5111.0080

Abstract

 The twenty year reign of copper oxide compounds (cuprates) as the only super-conductors above 50 K was broken in 2008 with the discovery of high temperature superconductivity in a diverse family of compounds containing iron and pnictogens or chalcogens. The question immediately raised was how is it that these iron compounds mimic the physics of cuprates?

 

Although some similarities were quickly identified, such as the presence of antiferromagnetism in the phase diagrams, the answer it seems it that the connections are subtle, and that the physics of iron compounds is in many respects very different from that realized in cuprates. Perhaps they do not mimic cuprates at all, but rather offer an entirely new route to high temperature superconductivity. This talk is an overview emphasizing the superconductivity in relation to the chemistry, electronic structure and magnetism of these compounds.
The work was supported by the Department of Energy, Division of Materials Sciences and Engineering.

Last modified:22 October 2012 2.30 p.m.