Luc Berger Professor Emeritus Ph.D. University of Lausanne Email: lberger@andrew.cmu.edu Phone: (412) 268-2919 FAX: (412) 681-0648

Theoretical studies are performed on metallic ferromagnets such as iron, nickel, cobalt, and their alloys and glasses.

Conduction electrons interact with spin waves, domain walls, film interfaces and other disturbances of the magnetic spin system through the s-d exchange energy and through hydromagnetic forces. The conduction electrons also undergo anisotropic scattering by magnetized chemical impurities through the spin-orbit energy.

Selected Publications

Berger, L. "Generation of dc Voltages by a Magnetic Multilayer Undergoing Ferromagnetic Resonance", Phys. Rev. B 59: 11465 (1999).

Berger, L., "Spin-Wave Emitting Diodes and Spin Diffusion in Magnetic Multilayers," IEEE Transactions on Magnetics 34: 3837 (1998).

Berger, L., "Emission of Spin Waves by a Magnetic Multilayer Traversed by a Current," Phys. Rev. B 54: 9353 (1996).

Salhi, E. and L. Berger, "Current-Induced Displacements of  Bloch Walls in Ni-Fe Films of Thickness 120-740 nm", J. Appl. Phys. 73: 6405 (1993).

Berger, L., "Theory of Magnetoresistance In Concentrated Ferromagnetic Alloys," J. Appl. Phys. 67: 5549 (1990).