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Lecture Rembert A. Duine


19 december 2006 FWN-Building 5113.0202, Nijenborgh 4, 9747 AG, Groningen
Speaker:Dr. Rembert A. Duine
Affiliation:Department of Physics and Astronomy, Institute for Theoretical Physics, Utrecht University
Title:Giant magnetoresistance and current-induced torques in antiferromagnetic metals
Date:Tue Dec 19, 2006
Location:FWN-Building 5113.0202
Host:Bart van Wees
Telephone:+31 50 363 4933


Spintronics in ferromagnetic metals is built on a complementary set of phenomena in which magnetic configurations influence transport coefficients and transport currents alter magnetic configurations. In this talk, I will discuss our recent proposal that corresponding effects occur in circuits containing antiferromagnetic metals. Toy-model, as well as ab initio calculations, show that the critical current for order parameter orientation switching can be smaller in the antiferromagnetic case because of the absence of shape anisotropy and because current-induced torques can act through the entire volume of an antiferromagnet. The effects of inelastic scattering on these results will be discussed, as well as the possibility of detecting spin transfer in an antiferromagnet by studying exchange bias properties of spin valves.
Laatst gewijzigd:22 oktober 2012 14:30