Dr. Yujun Deng
I am currently an Associate Staff Scientist at Stanford Institute for Materials and Energy Sciences. I joined the Shen group as a postdoctoral researcher in 2021, supported by the Q-FARM Bloch Fellowship, after receiving my Ph.D. at Fudan University in Shanghai, China. My current research interest is to investigate the emergent properties of exfoliated two-dimensional materials and their heterostructures using angle-resolved photoemission spectroscopy and scanning microwave impedance microscopy. I am also interested in the development of in-situ modulation techniques tailored for these materials. [Email]
Dr. Makoto Hashimoto
I am currently an Associate Staff Scientist at Stanford Synchrotron Radiation Lightsource. I joined the Shen group as a postdoctoral scholar in 2008, after receiving my Ph.D at the University of Tokyo, Japan. My current research interest is to understand strongly-correlated electron systems, particularly high-temperature cuprate superconductors by mainly using angle-resolved photoemission spectroscopy (ARPES). I am also interested in the use and development of other spectroscopy techniques such as resonant inelastic x-ray scattering (RIXS), time-resolved ARPES and spin-resolved ARPES.
Dr. Patrick Kirchmann
The emergence of order in complex quantum materials is governed by competing interactions of charge, lattice and spin degrees of freedom, which, however, often are difficult to disentangle in thermal equilibrium. Thus I am interested in applying non-equilibrium femtosecond pump-probe schemes and in particular time-resolved ARPES and time-resolved soft x-ray diffraction to such materials as CDW-BCS cross-over compounds, novel superconductors and topological insulators. These methods offer new insights to the underlying fundamental scattering processes and may open novel possibilities for device application.
[Email | CV]
Dr. Wei-Sheng Lee
I am a staff scientist and lead an x-ray scattering program at Stanford Institute for Materials and Energy Science (SIMES) at SLAC National Accelerator Lab. My research interest is to understand and control novel quantum states emergent in strongly correlated electron system. We focus on revealing collective behavior in quantum materials using advanced x-ray spectroscopy, including x-ray scattering and ultrahigh-resolution- and-momentum- resolved resonant inelastic x-ray scattering (RIXS). We actively explore to combine these techniques with novel sample environments, such as using ultrafast optical pumping, high field pulsed magnet, controllable strain, and electric field. We utilize state-of- the-art instruments in synchrotron facilities worldwide to conduct our research. In particular, we perform time-resolved x-ray scattering/RIXS at LCLS and work closely with LCLS scientists to explore new types of experiment using x-ray free electron laser.
[Email | CV]
Dr. Donghui Lu
I am currently a staff scientist at Stanford Synchrotron Radiation Laboratory. I graduated from Nanjing University with B.S. degree in Solid State Physics. I spent three years in Institute of Physics, Chinese Academy of Sciences, China and three years in Institute of Solid State Physics, Karlsruhe Research Center, Germany for my post-graduate studies. I received my Ph.D. degree in Condensed Matter Physics in 1997. My research interests are mainly focused on ARPES studies of strongly correlated electron systems.
Dr. Sung-Kwan Mo
I am a research scientist at the Advanced Light Source, Lawrence Berkeley National Laboratory. I received my Ph.D. from University of Michigan in 2006, then worked as a postdoctoral fellow in Shen group before moving across the Bay in 2010. My scientific interest is to investigate electronic properties of advanced materials using ARPES, ranging from heavy fermions, topological insulators, low dimensional systems, to functional oxides for energy applications.
Dr. Jonathan Sobota
I am a Staff Scientist at SLAC National Accelerator Laboratory. I completed my Ph.D. at Stanford University in 2014, and continued my postdoctoral studies at SLAC and Lawrence Berkeley National Lab. My research focuses on development of advanced spectroscopies for studying electronic interactions in solids, including photoemission with both spin and time resolution. My goal is to achieve a deeper understanding of the physics of quantum materials including superconductors and topological materials, and to develop approaches for controlling the relevant degrees-of-freedom.