Visscher, Pieter

Dr. Pieter B. Visscher is a professor of physics and has been at The University of Alabama since 1978. He received his Ph.D. from the University of California – Berkeley in theoretical solid state physics, where he worked with the late Leo Falicov on galvanomagnetic effects in hexagonal metals. His work with MINT involves micromagnetic simulation and related theory. His most recent work is on anisotropy-graded media, developing an energy-landscape formulation of switching that makes it easy to establish rigorous bounds for the stability/coercivity ratio of such media, as well as to find systems that optimize the ratio. Previous work has involved simulation of self-assembly of magnetic colloids (FePt nanoparticles), spin-wave instabilities in switching and coarse-graining of damping coefficients. Descriptions and movies of some of this work are at http://bama.ua.edu/~visscher/mumag. He has also developed a simple public-domain micromagnetic simulator for the PC, at http://faculty.mint.ua.edu/~visscher/AlaMag. His group was the first to introduce the fast multipole method (FMM) in micromagnetic simulation. Before becoming involved with the MINT center, he worked on transport in fluids, developing a renormalization-group theory of the Navier-Stokes equation. He is the author of an undergraduate text in electromagnetism (Field and Electrodynamics, John Wiley and Sons, 1988) as well as many research papers.

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