期刊
APPLIED PHYSICS LETTERS
卷 103, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4827301
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资金
- NSF Center for Energy Efficient Electronics Science (NSF) [ECCS-0939514]
We report on the modulation of tunneling resistance in MoS2 monolayers using a conductive atomic force microscope (AFM). The resistance between the conductive AFM probe and the bottom electrode separated by a monolayer MoS2 is reversibly reduced by up to 4 orders of magnitude, which is attributed to enhanced quantum tunneling when the monolayer is compressed by the tip force. Under the Wentzel-Kramers-Brillouim approximation, the experimental data are quantitatively explained by using the metal-insulator-metal tunneling diode model. As an ideal tunneling medium, the defect-free, nanometer-thick MoS2 monolayer can serve as the active layer for non-impacting nano-electro-mechanical switches. (C) 2013 AIP Publishing LLC.
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