A percolative simulation of electromigration phenomena
Resistance degradation of metallic strips due to electromigration is studied within a percolative approach based on a random resistor network. Both defect generation and recovery driven by a current stress are considered. The main features of experiments performed on Al0.5%Cu lines are well reproduced, thus providing a unified description of degradation processes in terms of physical parameters.
percolation electromigration recovery failure models device reliability