Our current research involves the study of quantum materials. Most notable among these are the strongly correlated electron systems, such as the high-temperature superconductors. Other materials of interest are spin-orbit coupled system with non-trivial topological properties, and materials in extreme 2D and 1D limits. We study these systems by probing their interactions with electromagnetic radiation, ranging from x-rays, to the ultraviolet, and into the microwave regime.
We develop experimental tools for our studies. Our primary experimental tool is angle-resolved photoemission spectroscopy (ARPES), and its time- and spin- resolved variants. We also perform experiments using resonant x-ray scattering and microwave impedance microscopy techniques. We help maintain two experimental endstations (Beamline 5-4 & Beamline 5-2) at the Stanford Synchrotron Radiation Lightsource (SSRL), one endstation (Beamline 10.0.1) at the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory (LBNL), near the University of California, Berkeley.