Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor

Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor

We theoretically investigate the effect of a defect at the interface between a conductor and reservoirs in an atomic-scale device. Since fabrication of atomic-scale contacts is a complex task, there could be defects at the interface between the conductor and reservoirs. Such defective contacts will...

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Main Author: Masato Morifuji
Format: Article
Language:English
Published: Hindawi Limited 2017-01-01
Series:Advances in Condensed Matter Physics
Online Access:http://dx.doi.org/10.1155/2017/2857393
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spelling doaj-3269959f19e24e0f85c86dcf0c865d1e2020-11-25T01:09:40ZengHindawi LimitedAdvances in Condensed Matter Physics1687-81081687-81242017-01-01201710.1155/2017/28573932857393Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale ConductorMasato Morifuji0Department of Quantum Electronics, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, JapanWe theoretically investigate the effect of a defect at the interface between a conductor and reservoirs in an atomic-scale device. Since fabrication of atomic-scale contacts is a complex task, there could be defects at the interface between the conductor and reservoirs. Such defective contacts will make it difficult to measure currents properly. In this paper, we calculate current-voltage characteristics in two-dimensional devices with a defective connection to reservoirs by using the nonequilibrium Green’s function method. Results show that the magnitude of resistance change depends on the amplitude of quantized wave functions at the position of the defect.http://dx.doi.org/10.1155/2017/2857393
collection DOAJ
language English
format Article
sources DOAJ
author Masato Morifuji
spellingShingle Masato Morifuji
Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor
Advances in Condensed Matter Physics
author_facet Masato Morifuji
author_sort Masato Morifuji
title Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor
title_short Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor
title_full Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor
title_fullStr Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor
title_full_unstemmed Theoretical Study on Effect of Defective Connection to Reservoirs in an Atomic-Scale Conductor
title_sort theoretical study on effect of defective connection to reservoirs in an atomic-scale conductor
publisher Hindawi Limited
series Advances in Condensed Matter Physics
issn 1687-8108
1687-8124
publishDate 2017-01-01
description We theoretically investigate the effect of a defect at the interface between a conductor and reservoirs in an atomic-scale device. Since fabrication of atomic-scale contacts is a complex task, there could be defects at the interface between the conductor and reservoirs. Such defective contacts will make it difficult to measure currents properly. In this paper, we calculate current-voltage characteristics in two-dimensional devices with a defective connection to reservoirs by using the nonequilibrium Green’s function method. Results show that the magnitude of resistance change depends on the amplitude of quantized wave functions at the position of the defect.
url http://dx.doi.org/10.1155/2017/2857393
work_keys_str_mv AT masatomorifuji theoreticalstudyoneffectofdefectiveconnectiontoreservoirsinanatomicscaleconductor
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