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

L. Berger, "Relation Between Damping, Current-Induced Torques, and Wall Resistance", Phys. Rev. B 75: 174401 (2007).

S. Mukherjee and L. Berger, "Switching of Composite Media by Wall Propagation", J. Appl. Phys. 99: 08Q909 (2006).

L. Berger, "Analysis of Measured Transport Properties of Domain Walls in Magnetic Nanowires and Films", Phys. Rev. B 73: 014407 (2006).

L. Berger, "Relation Between Giant Magnetoresistance and Critical Current for Spin Precession in Magnetic Multilayers", Phys. Rev. B 72: 100402 (2005).

A. Rebei, L. Berger, R. Chantrell, and M. Covington, "1/f-Type Noise in a Spin Valve", J. Appl. Phys. 97: 10E306 (2005).

L. Berger, "Influence of Current Leads on Critical Current for Spin Precession in Magnetic Multilayers", J. Magn. Magn. Mater. 278: 185 (2004).

L. Berger, " Multilayer Configuration for Experiments of Spin Precession Induced by a DC Current ", J. Appl. Phys. 93: 7683 (2003).