George Kastrinakis
Published 1995-09-13, updated 1997-10-26Version 3
At low temperature and for finite spin scattering in a weakly disordered metal, for a certain value, predicted from our theory, of the material-dependent paramagnon interaction, the total conductivity becomes highly sensitive to the orbital effects of a finite magnetic field. As a consequence, positive giant magnetoresistance and giant corrections to the Hall coefficient arise. We obtain very good agreement between this theory and recent positive giant magnetoresistance experiments, while making specific material-dependent predictions.
Comments: Revised version. Basic idea and conclusions remain unaltered, major change in technical implementation. The theory presented here apparently can explain (inter alia) recent expts. probing positive giant magnetoresistance in the high-Tc Tl-2201 cond-mat/9710032 and in a a quasi-two-dimensional organic metal cond-mat/9710245. 7 pages Latex + 5 ps. figures
Geometric properties of two-dimensional coarsening with weak disorder
A Single Slice 2d Anderson Model at Weak Disorder
Effect of weak disorder in the Fully Frustrated XY model
