Impact of incomplete metal coverage on the electrical properties of metal-CNT contacts: A large-scale ab initio study

Fediai A, Ryndyk DA, Seifert G, Mothes S, Schroter M, Claus M, Cuniberti G (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 109

Article Number: 103101

Journal Issue: 10

DOI: 10.1063/1.4962439

Abstract

Using a dedicated combination of the non-equilibrium Green function formalism and large-scale density functional theory calculations, we investigated how incomplete metal coverage influences two of the most important electrical properties of carbon nanotube (CNT)-based transistors: contact resistance and its scaling with contact length, and maximum current. These quantities have been derived from parameter-free simulations of atomic systems that are as close as possible to experimental geometries. Physical mechanisms that govern these dependences have been identified for various metals, representing different CNT-metal interaction strengths from chemisorption to physisorption. Our results pave the way for an application-oriented design of CNT-metal contacts.

Involved external institutions

Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Fediai, A., Ryndyk, D.A., Seifert, G., Mothes, S., Schroter, M., Claus, M., & Cuniberti, G. (2016). Impact of incomplete metal coverage on the electrical properties of metal-CNT contacts: A large-scale ab initio study. Applied Physics Letters, 109(10). https://doi.org/10.1063/1.4962439

MLA:

Fediai, Artem, et al. "Impact of incomplete metal coverage on the electrical properties of metal-CNT contacts: A large-scale ab initio study." Applied Physics Letters 109.10 (2016).

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