First-principles study of field-effect doping in nano-scale systems by the enforced fermi-energy difference method

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Abstract

We propose a method for investigating the field-effect doping and the capacitance in nano-scale systems by first-principles calculations. Utilizing this method, we demonstrated the field-effect doping into the water bi-layer (channel) sandwiched by a pair of gate electrodes. We found that the H 2O molecules rotated around the O atoms artificially pinned, accompanied by the bias application between the channel and gate electrodes. We confirmed that Q-μ relation (capacitance) was also modified through this rotation of the molecule. We believe that this kind of bias-induced structural modifications of the channel materials can be utilized for designing nano-electronic devices with a variety of novel and functional characteristics. © 2005 The Surface Science Society of Japan.

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Uchida, K., Kageshima, H., & Inokawa, H. (2005). First-principles study of field-effect doping in nano-scale systems by the enforced fermi-energy difference method. In e-Journal of Surface Science and Nanotechnology (Vol. 3, pp. 453–456). The Japan Society of Vacuum and Surface Science. https://doi.org/10.1380/ejssnt.2005.453

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