DocumentCode
1753153
Title
The RTM/NEGF Method for ab initio Calculations of Electron Transport through Nano-Structures
Author
Hirose, Kenji ; Kobayashi, Nobuhiko
Author_Institution
Fundamental and Environmental Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba, Ibaraki 305–8501, Japan and CREST, Japan Science and Technology Corporation Email: hirose@frl.cl.nec.co.jp
Volume
1
fYear
2006
fDate
17-20 June 2006
Firstpage
55
Lastpage
58
Abstract
We develop a first-principles calculation method for the quantum transport through nanostructures between electrodes by using the recursion-transfer-matrix (RTM) method combined with the nonequilibrium Green function (NEGF) method. This RTM/NEGF method is applied to the electronic states and current-voltage (I-V) characteristics of atomic-scale nanocontact system. We observe a non-linear behavior in the I-V characteristics and correspondingly a gap structure appears in the differential conductance. We find that such a non-linear behavior emerges when the transport properties change from tunneling to ballistic regimes.
Keywords
Differential equations; Electrodes; Electrons; Green function; Nanostructures; Nanotechnology; National electric code; Particle scattering; Tail; Tunneling;
fLanguage
English
Publisher
ieee
Conference_Titel
Nanotechnology, 2006. IEEE-NANO 2006. Sixth IEEE Conference on
Print_ISBN
1-4244-0077-5
Type
conf
DOI
10.1109/NANO.2006.247565
Filename
1717015
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