Influence of dislocation microstructure on low temperature magnetoresistance in copper single- and polycrystals

Angular and field dependent transverse magnetoresistance (TMR) have been studied in copper single- and polycrystals containing different density and distribution of dislocations. In the open-orbit orientation, the quadratic variation of TMR with the applied magnetic field changes to the quasi-linear dependence, as the density of dislocations increases. In the closed-orbit orientations, TMR shows a linear dependence with the magnetic field, the …