ABSTRACT
Quantum materials offer a path to revolutionary technologies through their unique and exotic properties. These properties often arise from strong electronic correlations driven by the complex interplay of charge, spin, lattice, and orbital degrees of freedom. Predicting these properties directly using first-principles calculations remains challenging due to the often non-perturbative nature of these correlations. Additionally, intrinsic material properties are often obscured by imperfections in atomic arrangements. Experimentally, by tuning materials near regions of instability on their phase diagrams and carefully controlling their composition and environment, we can uncover unexpected and novel behaviours.
In this seminar, I will discuss two aspects of quantum materials research: unconventional superconductivity and cryogenic magnetic refrigeration. I will highlight how precise crystal synthesis have enabled the discovery of novel superconductors, and how the discovery of superior magnetocaloric materials can directly translate into improvements in cryogenic cooling technology.
BIOGRAPHY
Dr. Jiasheng Chen received his B.A. and M.Sc. in Natural Sciences from University of Cambridge in 2015 and completed his Ph.D. in Physics there in 2020 under the supervision of Prof. F. Malte Grosche. From 2020 to 2023, he worked as a Research Associate in the Quantum Matter group at the Cavendish Laboratory. He is currently an Instrument Scientist at the Maxwell Centre, University of Cambridge, where he develops precision measurement techniques and establishes high magnetic field and low-temperature research facilities for quantum material studies. His research centers on strongly correlated quantum materials, with a focus on unconventional superconductors, magnetocaloric materials, crystal growth methods, and low-temperature refrigeration technologies.
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