Nonequilibrium quantum transport properties of a silver atomic switch

Zhongchang Wang; Takuya Kadohira; Tomofumi Tada; Satoshi Watanabe

doi:10.1021/nl0711054

Nonequilibrium quantum transport properties of a silver atomic switch

Zhongchang Wang, Takuya Kadohira, Tomofumi Tada, Satoshi Watanabe

Research output: Contribution to journal › Article › peer-review

54 Citations (Scopus)

Abstract

Combining nonequilibrium Green's function technique with density functional theory, electron transport, and structural properties of an Ag atomic switch through Ag₂S have been investigated. We have found that an Ag atomic conductance channel in Ag₂S is generated after structure optimization, resulting in large enhancement of the electron transmission coefficient at the Fermi level and metallic behavior of the Ag-Ag ₂S-Ag system. Such spontaneous metallization at the Ag-Ag ₂S interface may play an important role in fast switching of the Ag-Ag₂S atomic switch.

Original language	English
Pages (from-to)	2688-2692
Number of pages	5
Journal	Nano Letters
Volume	7
Issue number	9
DOIs	https://doi.org/10.1021/nl0711054
Publication status	Published - Sept 1 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl0711054

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AU - Wang, Zhongchang

AU - Kadohira, Takuya

AU - Tada, Tomofumi

AU - Watanabe, Satoshi

PY - 2007/9/1

Y1 - 2007/9/1

N2 - Combining nonequilibrium Green's function technique with density functional theory, electron transport, and structural properties of an Ag atomic switch through Ag2S have been investigated. We have found that an Ag atomic conductance channel in Ag2S is generated after structure optimization, resulting in large enhancement of the electron transmission coefficient at the Fermi level and metallic behavior of the Ag-Ag 2S-Ag system. Such spontaneous metallization at the Ag-Ag 2S interface may play an important role in fast switching of the Ag-Ag2S atomic switch.

AB - Combining nonequilibrium Green's function technique with density functional theory, electron transport, and structural properties of an Ag atomic switch through Ag2S have been investigated. We have found that an Ag atomic conductance channel in Ag2S is generated after structure optimization, resulting in large enhancement of the electron transmission coefficient at the Fermi level and metallic behavior of the Ag-Ag 2S-Ag system. Such spontaneous metallization at the Ag-Ag 2S interface may play an important role in fast switching of the Ag-Ag2S atomic switch.

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Nonequilibrium quantum transport properties of a silver atomic switch

Abstract

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