The effect of magnetic order in amorphous LaSrMnO films on an anomaly in the variable range hopping

Anomalies of a variable range hopping (VRH) in amorphous LaSrMnO films containing ferromagnetic (FM) and antiferromagnetic (AFM) crystalline clusters are investigated. Anomalies are constituted, in the 190–130 K temperature interval, by an increase of the local activation energy (εaεa) with decreasing temperature. It is established that the increase in εaεa is caused by magnetic ordering of AFM clusters containing Mn3+ and Mn4+ centers participating in VRH.