Crystal structure of epitaxial cesium tin bromide grown on a NaCl single crystal substrate.

On the morning of March 3rd 2022, LHQS member Liangji Zhang successfully defended his Ph.D. dissertation entitled “Quantum Coherent Transport Phenomena in Epitaxial Halide Perovskites.”

Dr. Liangji Zhang (right) and LHQS collaborator Prof. Erik Henriksen (left) in the WashU cleanroom.

Liangji's Ph.D. focused on exploring low-temperature and high magnetic field quantum coherent transport phenomena in a wide vareity of low-dimensional electron systems. Liangji was able to show that quantum interference effects on the charge carrier transport can be realized in epitaxial films of halide perovskite materials (cesium tin iodide and cesium tin bromide). Liangji's results show that these materials are emerging as a new class for creating low-dimensional electron systems and quantum electronic devices. These efforts were enabled via close collaboration with MSU Prof. Richard R. Lunt and his research group.

Liangji is now starting a new job working as a nonfabrication engineer in the cleanroom facility at the The Institute of Materials Science & Engineering at Washington University in St. Louis.

Liangji is the last of the "first-generation" Ph.D. students who joined the LHQS at its inception and built it into the cutting-edge quantum lab that it is today. Congratulations Liangji on a fantastic Ph.D.!