The angle-resolved photoemission spectroscopy (ARPES) technique reveals the energy of the charged states of materials and their momentum dependence. ARPES is also highly sensitive to the symmetry of electronic states and their interactions with their environments. ARPES is a premier tool for understanding the emergent properties of superconducting, low-dimensional, or topological materials.
The ALS ARPES Program strives to create instrument environments and workflows that enable the highest-impact discovery-based science, especially in the area of quantum materials. We devise world-leading tools for low-temperature ARPES measurements with world-leading capabilities in energy resolution (down to 1 meV*), spatial resolution (down to 100 nm), spin resolution, operando environments, and in situ synthesis. We strive to support an agile, collaborative environment by working hand-in-hand with our user community to develop experimental protocols, navigate the extensive space of experimental degrees of freedom, and analyze data.
*After Beamline 4.0.3 upgrade in progress.
Senior Scientist, Program Lead
Doctoral and Postdoctoral Researchers
ALS Postdoctoral Fellow, Shanghai Tech University and Oxford University
Two-dimensional magnetic Van der Waals heterostructures
Na Hyun Jo
ALS Postdoctoral Fellow, Quantum Systems Accelerator, Berkeley Lab
ALS Postdoctoral Fellow, Stanford University
Magnetic topological insulators and magnetic Weyl semimetals
ALS Doctoral Fellow, Nanjing University
Topological crystalline insulating oxide MBE
Juan Jiang, Assistant Professor, University of Science and Technology of China
Postdoctoral Researcher (2015-2017)
Yeongkwan Kim, Assistant Professor, KAIST
Postdoctoral Researcher (2013-2016)
Aiji Liang, Research Professor, Shanghai Tech
Postdoctoral Researcher (2017-2019)
Hyejin Ryu, Staff Scientist, Korea Institute of Science and Technology
Postdoctoral Researcher (2014-2017)
Shujie Tang, Staff Scientist, SIMIT
Postdoctoral Researcher (2015-2019)
Caizhi Xu, Senior Engineer, Micron Technology, Inc.
ALS Doctoral Fellow (2016-2017)
Yi Zhang, Professor, Nanjing University
ALS Postdoctoral Fellow (2011-2015)
Bo Zhou, Senior Engineer, Fermi
Postdoctoral Researcher (2012-2014)