Abstract
We present the room temperature operation of a vertical tunneling field-effect transistor using a stacked double bilayer graphene (BLG) and hexagonal boron nitride heterostructure. The device shows two tunneling resonances with negative differential resistance (NDR). An analysis of the electrostatic potential drop across the heterostructure indicates the resonances are associated with the relative alignment of the lower or upper bands of the two BLG. Using the NDR characteristic of the device, one-transistor latch or SRAM operation is demonstrated. The device characteristics are largely insensitive to temperature from 1.5 to 300 K.
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