Hopping conductivity in amorphous antimony

Amorphous Sb films ranging in thickness between 170 and 14 000 {} were prepared at 77^∘{}K in three different ways: getter sputtering, evaporation from Sb, and evaporation from PtSb. The electrical resistivity of these various films is well fitted between 30 and 160 ^∘{}K by the relation ρ=ρ₀exp[(T₀T)1/4] with T₀10⁷ ^∘{}K.