معرفی
John F. Zasadzinski is the Paul and Suzi Schutt Endowed Chair in Science and Professor of Physics at Illinois Institute of Technology, part of the Lewis College of Science and Letters. His research focuses on electron tunneling studies of novel superconductors, including MgB₂, CaC₆, and niobium (Nb), with applications in superconducting radiofrequency (SRF) cavities for particle accelerators. Collaborations include Argonne and Fermi National Laboratories.
Education: B.S. in Physics from Illinois Benedictine College and Ph.D. from Iowa State University. Research emphasizes two-band superconductivity, surface paramagnetism in Nb, and enhancing SRF cavity performance. He has pioneered modified Eliashberg theory for analyzing cuprate superconductors and explored niobium surface oxides for superconducting qubits.
Key research trends in his publications include optimizing Nb-based materials for high-Q resonators, investigating surface treatments to reduce field emission in SRF cavities, and advancing quantum computing through superconducting qubit design. His work bridges fundamental physics and applied technologies for particle accelerators and quantum devices.
Notable contributions include records in accelerating gradients for TESLA SRF cavities and insights into nitrogen-doped Nb cavities. He employs techniques like scanning tunneling microscopy, Raman spectroscopy, and atomic layer deposition to probe material properties at atomic scales.
Future directions involve exploring new superconducting materials like rhenium for qubits and refining surface encapsulation methods to enhance coherence times. His lab focuses on nanoscale defects and their impact on SRF cavity performance, leveraging multi-modal electron microscopy.
