Step tunneling enhanced asymmetry in asymmetric electrode metal-insulator-insulator-metal tunnel diodes
作者： N. Alimardani , J. F. Conley
DOI: 10.1063/1.4799964
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摘要: The impact of nanolaminate insulator tunnel barriers on asymmetric metal workfunction metal-insulator-insulator-metal (MIIM) devices is investigated. We demonstrate experimentally that bilayer insulators introduce additional asymmetry and can be arranged to either enhance or oppose the induced by electrodes. It also shown step tunneling dominate I-V M1IIM2 diodes. By combining with standard approach electrodes, we are able achieve low voltage non-linearity exceeding both single layer electrode metal-insulator-metal as well symmetric M1I1I2M1 devices.
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