Conductivity switching in ZnS single-crystal platelets

Abstract

Electrically induced conductivity switching has been observed in ZnS single-crystal platelets grown by the argon transport method. Changes in resistance in excess of 6 orders of magnitude have been observed in devices made by evaporating silver electrodes onto opposite faces of the crystals. The low resistance state obeys Ohm's Law over at least 4 orders of magnitude of applied voltage and has zero temperature coefficient of resistance. It is only stable below a critical temperature of about −40°C.