Abstract
The magnetoresistance effect in Ni nanowires was investigated. The magnetoresistance ratio at 77 K reached 2400%, far beyond that of ordinary giant magnetoresistance effects. The Ni nanowires exhibit two different types of magnetoresistance effect: large MR with quantized conductance, and small MR without quantized conductance. The results imply that a relation exists between quantized transport and the giant magnetoresistance effect.
