Jaewon Choi

Jaewon Choi joined the I21 team in October 2020. His role mainly focuses on developing in-house science programs and supporting external users. He has been studying various quantum materials where the exotic quantum phases emerge due to a strong correlation effect, by using the high-resolution resonant inelastic x-ray scattering (RIXS) technique. His ongoing research projects at I21 include cuprate and infinite-layer nickelate superconductors, topological Weyl semimetal, canonical spin systems, as well as battery-related materials. Before joining I21, he completed his PhD at Korea Advanced Institute of Science and Technology (KAIST) in South Korea for the study of superfluid and supersolid phases in bosonic 4He systems. He also worked in Johan Chang’s group at the University of Zurich as a postdoc. There, he tackled key scientific questions such as the symmetry of charge density waves in cuprates and the nature of the hidden-order phase in URu2Si2 by combining hard x-ray diffraction techniques with extreme sample environments. Through these projects, he gained an extensive portfolio of technical skill sets in developing milli-Kelvin cryogenic and vacuum instruments, designing low-noise electronic and mechanical measurement schemes, performing finite-element-method (FEM) simulations, as well as electron-beam lithography for micro- and nano-structures.