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Postdoctoral Scholars

Dr. Zhuoyu Chen

I joined the Shen group in April 2018 as a postdoctoral researcher. I obtained my B.S. in Mathematics and Physics from Tsinghua University, Beijing, China in 2012. I received my Ph.D. in Applied Physics from Stanford University, California, USA in April 2018. For my doctoral thesis, I studied the dual-gate controlled two-dimensional ground states of a superconducting oxide interface, using pulsed laser deposition for sample synthesis and dilution refrigerator for low-temperature transport measurements. My current interest is to study superconductivity and correlated electrons combining oxide/chalcogenide molecular beam epitaxy, scanning probe microscopy, and angle-resolved photoemission spectroscopy.

Dr. Nicolas Gauthier

In March 2018, I joined the Shen group as a postdoctoral scholar supported by a fellowship from the Swiss National Science Foundation. I obtained my B.Sc. and M.Sc. degrees in physics from Université de Montréal in Canada. In October 2017, I completed my Ph.D. at the Paul Scherrer Institut (PSI) and ETH Zürich in Switzerland where I studied frustrated magnets, heavy fermions and multiferroics with neutron and X-ray scattering. Through these investigations, I became very interested in the physics of magnetic and electric multipoles in f-electron materials, and more generally in the interplay between the magnetic and electric degrees of freedom. Here, I am getting new insights of the properties of quantum materials by looking into the time domain. Specifically, my work focuses on time- and angle-resolved photoemission spectroscopy (trARPES) in heavy fermions and other strongly correlated materials such as the manganites.

Dr. Yu He

My current research includes photoemission spectroscopy studies on high-Tc superconductors, specifically LSCO and Bi2201 system in cuprates. In these systems, the scenario of how Mott insulator melts into superconductors and how strong electron-phonon coupling (in the form of polaronic excitation) influences superconductivity are mostly addressed via phenomenological approaches. I joined Stanford Applied Physics department and later Shen Group in Fall 2010, shortly after graduation from University of Science and Technology of China (USTC/0600) in the summer.

Dr. Heike Pfau

My research focuses on materials with strong electronic correlations. These materials develop novel phenomena and unconventional electronic phases such as heavy fermion behavior, unconventional superconductivity, nematicity, and quantum criticality. I want to advance the knowledge of such emergent collective phenomena using angle-resolved photoemission spectroscopy (ARPES) as well as low temperature transport and thermodynamic probes. My main focus lies on correlated materials containing f- and d-electron elements such as heavy fermion systems and iron-based superconductors.
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Dr. Shoya Sakamoto

I joined Shen group as a postdoctoral researcher in April 2018 supported by a fellowship from the Japan Society For the Promotion of Science (JSPS). I received my B.S. and Ph.D. in Physics from the University of Tokyo. In my Ph.D. work, I studied the electronic structures and magnetic properties of spintronics materials such as ferromagnetic semiconductors using (angle-resolved) photoemission spectroscopy, x-ray magnetic circular dichroism, and first-principles calculations. Here, I am involved in the development of a novel spin-resolved ARPES system and excited to see the exotic spin-related phenomena in quantum materials.

Dr. Jinpeng Wu

I joined Shen Group as a postdoctoral research fellow in Feb. 2016. I received B.Sc and Ph.D of Electrical Engineering from Tsinghua University in Jul. 2010 and Jul. 2015, respectively. Besides, I got B.Sc of Economics as a double degree from Peking University in Jul. 2012. Currently, I am based at Advanced Light Source of Lawrence Berkeley National Laboratory, using soft X-ray spectroscopy (XAS, XES and RiXS) to analyze the fundamental mechanism of energy storage materials (especially for large-scale, or grid scale application). My other research interests include transient performance of power transmission system, electromagnetic compatibility, novel techniques for DC power transmission system, etc. I was elected as the 24th President of Graduates Union, Tsinghua University from Dec. 2013 to Dec. 2014; in 2015, I became the Young Leadership Fellow of Committee of 100, US.


Dr. Hao Yan

I am currently a joint postdoctoral fellow between Shen and Melosh labs. I received my Ph.D. in chemistry from Harvard in 2010. From 2010 to 2011 I was a postdoctoral researcher at Harvard under the advisory of Charles Lieber. My current research focuses on the material science of diamondoids - essentially molecular-scale diamond. Our unique capability to separate, chemically functionalize and assemble these molecules offers an ideal playground for materials scientists to study the properties of diamond and diamond-like structures at the nanometer scale. My current interest lies on the photoemission and electron-phonon interaction in diamondoids and their hybrid structures; in the long term I am also interested in understanding their thermal, mechanical and electronic properties, as well as their applications.