Abstract
We propose logic gates and circuits implemented with 2-D charge density wave (CDW) devices, which operate at room temperature. The 1T-TaS2 charge density wave devices exhibit a voltage triggered phase transition between the nearly commensurate and incommensurate CDW states, which is accompanied by an abrupt change of the resistance and hysteresis. The unique output characteristics of such devices allow for building logic gates and circuits without any transistors. Using the experimentally measured current–voltage characteristics, we model and numerically simulate the performance of the inverter and the OR logic gates consisting of CDW devices and regular resistors. Owing to the radiation-hard nature of the CDW devices and absence of transistors, the proposed circuits can be utilized in various harsh environments on earth or outer space.
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