Abstract
The paper describes pulse measurements on threshold switches based on thin layers (∼1μ) of multicomponent chalcogenide glasses. By means of voltage reversals prior to switching and monitoring of the corresponding switching delays, it has been demonstrated that switching in these systems is not essentially a thermal process. The switching delays depend on the polarity of applied preswitching bias voltages. The results provide further evidence for a space-charge mechanism, at any rate at low temperatures (e.g., −78°C to room temperature).
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