Alex Gray Seminar
11:00 am - 11:30 am, plus 30 minutes of Q & A
SERC Building, room 408
Title: Using advanced x-ray techniques to probe fundamental physical interactions in strongly-correlated and two-dimensional electronic systems
Speaker: Alex Gray, Department of Physics, Temple University, Philadelphia, Pennsylvania
For individuals who will not be on Temple's campus, Dr. Gray's lecture can be accessed through webex. The meeting number is 643 270 330
The ever-growing demand for miniaturization and increased speeds in next-generation energy-efficient electronic devices has taken science to the quantum frontier in which emergent phenomena at the nanoscale require a clear differentiation among surface, bulk and interface properties. Thus, for many technologically-promising novel materials, such as topological insulators, strongly-correlated oxides, and high-Tc superconductors, electronic structure and far-from-equilibrium dynamics vary dramatically as functions of depth and proximity to other materials. Therefore, novel depth-, time-, and spin-resolved element-specific characterization techniques are required to disentangle these rich electronic behaviors, including correlation effects, magnetism and spin. Inspired by these challenges, my research interests span two interrelated areas in experimental condensed matter physics: (1) depth-resolved spectroscopic imaging x-ray probes of electronic structure and (2) femtosecond electronic structure and spin dynamics. In particular, my research group is focusing on the development of new time-resolved FEL- and synchrotron-based x-ray techniques and applying these techniques to ultrafast depth-resolved studies of novel materials, buried interfaces, and multilayer structures.