2017 Graduate Fellows

Joshua “Shua” Sanchez

Superconductivity provides a way to attain high efficiency energy storage and transmission, but industrial applications require new superconducting materials with desirable properties like high transition temperatures (Tc), large carrier densities and low anisotropy. In the two known families of high Tc superconductors – the cuprates and iron arsenides – superconductivity is induced by suppressing a symmetry breaking phase (e.g. antiferromagnetism) using chemical doping. In this proposed research I will follow a similar empirical strategy to look for superconductivity in the compound LaAgSb2 which hosts a symmetry breaking ground state, the charge density wave phase. I will investigate this compound by growing chemically substituted single crystals and characterizing their physical properties via electrical transport, thermodynamic and magnetic measurements. I will also map out a temperature-composition phase diagram, to shed light on the paring mechanism of superconductivity. Such research may allow us to custom design superconducting materials for varied energy purposes.

Advisor Jiun-Haw Chu -Physics

“Providing clean energy to the inhabitants of our planet is a major challenge to future generations. The University of Washington is to be congratulated for establishing an Institute where faculty and students can work together to tackle the difficult global challenge of energy sustainability.”
– Mildred Dresselhaus, Professor of Physics and Electrical Engineering, Emerita and Institute Professor, Massachusetts Institute of Technology
“Energy competition is opening up in a variety of ways, the push for carbon control will continue, and the rate of technology advancement is exponential. All the things I’ve seen at the CEI are just perfect for the way we see things going in energy. You guys are at the cutting edge. We’re counting on you.”
– Ronald Litzinger, President, Edison Energy