Giant magnetoresistance of Co/Cu superlattice under high pressure

The magnitude of giant magnetoresistance (GMR) of the (Co10 Å/Cu10 Å) ₁₅ superlattice has been measured up to 20 kbar. It is found that the electrical resistivity ϱ decreases with increasing pressure at room temperature, having the rate ϱ^-1∂ϱ. ∂P = -22 ×10 ^-2 kbar ^-1. The magnetoresistance (MR) ration δϱ/ϱ ₅ at 4.2 K slightly decreases with increasing pressure. The saturation field H₅ also decreases with increasing pressure.