The Meyer-Neldel rule in chalcogenide glasses

摘要

The electrical conductivity in chalcogenide glasses is found to obey the Meyer-Neldel rule,σ = σ↓(00)e↑(-△ElE)Mn↓(e)(_△EikT). The Meyer-Neldel characteristic energy, E↓(MN), lies in the range 25-60 meV with σ00 in the range 10↑(-5)-10↑(-15) Scm↑(-1) which seems to be too small for band transport. A surprising correlation between σ↓(00) and E↓(MN) is alSO found. # 1997 American Institute of Physics. S0003-6951 (97) 04105-3