Prof. Dragomir Davidovic
School of Physics, Georgia Tech
Abstract: : We measure magnetic motion in single nanometer scale Ni particles in real time, using a technique of spin-to-charge conversion in quantum dots. Extraordinary long spin relaxation time is confirmed (~10 msec), similar to spins in nonmagnetic quantum dots. Highly sensitive yet simple technique to study magnetic properties developed, as an alternative to SQUIDs (superconducting quantum interference technique). Confirming strongly underdamped magnetic dynamics opens a different path to study macroscopic quantum effects in magnetization and spin transfer.
Bio: Dr. Dragomir Davidovic studies fundamental properties of condensed matter systems, by nanofabrication, transport measurements, and simulations and analysis. He received a B.S. Physics from Belgrade faculty of science, a PhD at the Johns Hopkins University in 1996, and a post-doctorate at Harvard University. Dragomir Davidovic is a Packard fellow. His research focuses on quantum properties in nanoscale structure with an emphasis on magnetism.