Type | Switching region | Initial forming process | feedback effect | Area dependency | Speed | Retention | Uniformity | Yield | Operating current |
---|---|---|---|---|---|---|---|---|---|
Filament-free | Whole area (or bulk) | No required | No | Significant | Slow | Short | Good | High | Low |
Filament | Nanoscale filament (channel) | Required | Heat | Insignificant | Fast | Long | Poor | Low | High |