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Dynamic admittance of carbon nanotube-based molecular electronic devices and their equivalent electric circuit

Yam, ChiYung and Mo, Yan and Wang, Fan and Li, Xiaobao and Chen, GuanHua and Zheng, Xiao and Matsuda, Yuki and Tahir-Kheli, Jamil and Goddard, William A., III (2008) Dynamic admittance of carbon nanotube-based molecular electronic devices and their equivalent electric circuit. Nanotechnology, 19 (49). Art. No. 495203. ISSN 0957-4484. doi:10.1088/0957-4484/19/49/495203. https://resolver.caltech.edu/CaltechAUTHORS:YAMnano08

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Abstract

We use first-principles quantum mechanics to simulate the transient electrical response through carbon nanotube-based conductors under time-dependent bias voltages. The dynamic admittance and time-dependent charge distribution are reported and analyzed. We find that the electrical response of these two-terminal molecular devices can be mapped onto an equivalent classical electric circuit and that the switching time of these end-on carbon nanotube devices is only a few femtoseconds. This result is confirmed by studying the electric response of a simple two-site model device and is thus generalized to other two-terminal molecular electronic devices.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0957-4484/19/49/495203DOIArticle
http://stacks.iop.org/Nano/19/495203PublisherArticle
http://www.iop.org/EJ/abstract/0957-4484/19/49/495203PublisherArticle
ORCID:
AuthorORCID
Goddard, William A., III0000-0003-0097-5716
Additional Information:Copyright © 2008 Institute of Physics. Received 18 July 2008, in final form 15 October 2008. Published 18 November 2008. Print publication: Issue 49 (10 December 2008). The authors thank Hong Guo, Jian Wang, and YiJing Yan for stimulating discussions. The Caltech team was supported partly by Intel Components Research (Portland, OR) and by NSF (CCF-0524490). The HKU team was supported by the Hong Kong Research Grant Council (HKU 7011/06P, N_HKU 764/05, HKUST 2/04C).
Funders:
Funding AgencyGrant Number
Intel Corp.UNSPECIFIED
Hong Kong Research Grant CouncilHKU 7011/06P
Hong Kong Research Grant CouncilN_HKU 764/05
Hong Kong Research Grant CouncilHKUST 2/04C
Other Numbering System:
Other Numbering System NameOther Numbering System ID
WAG0779
Issue or Number:49
DOI:10.1088/0957-4484/19/49/495203
Record Number:CaltechAUTHORS:YAMnano08
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:YAMnano08
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12422
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:25 Nov 2008 18:38
Last Modified:08 Nov 2021 22:28

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