Upcoming Events

High Temperature Superconductivity: Taming Serendipity

December 20, 2012 11:00AM to 12:00PM
Presenter 
Laura H. Greene, University of Illinois at Urbana-Champaign
Location 
Building 212, Room A157
Type 
Colloquium
Series 
Materials Science Colloquium
Abstract:
As we pass the centenary of the discovery of superconductivity, and a quarter century since the discovery of high temperature superconductivity, the design of new and more useful superconductors remains as enigmatic as ever. As high-density current carriers with little or no power loss, high-temperature superconductors offer unique solutions to fundamental grid challenges of the 21st century and hold great promise in addressing our global energy challenge in energy production, storage, and distribution. The 2008 discovery of a new class of high-temperature superconductors has made the community more enthusiastic than ever about finding new superconductors. Historically, these discoveries were almost completely guided by serendipity, and now, researchers in the field have grown into an enthusiastic global network to find a way, together, to predictively design new superconductors. I will share our general guidelines and hope to convey the renewed passion we share in this international pursuit. [1,2] Finally, some of our advances in probing strong electronic correlations with quasiparticle scattering spectroscopy as a means to elucidate the still-unknown mechanisms of high-temperature superconductivity will be presented. [3,4].

References:
[1] Laura H. Greene, “Taming Serendipity,” Physics World, 24, 41-43 (2011).
[2] Laura H. Greene, Hamood Z. Arham, Cassandra R. Hunt, and Wan Kyu Park, “Design of new superconducting materials, and point contact spectroscopy as a probe of strong electronic correlations,“ Journal of Superconductivity and Novel Magnetism 25, 2121-2126 (2012).
[3] H. Z. Arham, et al., “Detection of Orbital Fluctuations Above the Structural Transition Temperature in the Iron-Pnictides and Chalcogenides”, Phys. Rev. B 85, 214515; 1-10 (2012).
[4] W. K. Park, et al, “Observation of the hybridization gap and Fano resonance in the Kondo lattice URu2Si2,” Phys. Rev. Lett. 108, 246403; 1-5 (2012).