Theoretical studies on the charge trap mechanism of MONOS type memories  Relationship between atomistic information and program/erase actions
We have investigated atomistic structural changes of two types of defects (N vacancies and O substitutional defects) in a SiN layer in MONOS type memories during program/erase actions. N vacancy type defects reveal reversible structural change, whereas O substitutional defects are expected to reveal irreversible structural changes, indicating that detailed atomistic structure is crucial for clarifying the characteristics of MONOS type memory operation.
memories defects sin silicon dioxide first principles calculations