Non-Ohmic Conductivity of High-Resistance Layers of Diamond-Like Carbon

被引:1
|
作者
Nikolaev, S. N. [1 ]
Vedeneev, A. S. [2 ]
Luzanov, V. A. [2 ]
Emel'yanov, A., V [1 ,3 ]
Kozlov, A. M. [2 ]
Bugaev, A. S. [2 ,3 ]
Ryl'kov, V. V. [1 ,2 ]
机构
[1] Kurchatov Inst, Natl Res Ctr, Moscow 123182, Russia
[2] Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Fryazino Branch, Fryazino 141190, Moscow Oblast, Russia
[3] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia
基金
俄罗斯基础研究基金会;
关键词
Diamonds; -; Nanoclusters; Solvents;
D O I
10.1134/S1064226921100120
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, we study the field dependences of the conductivity of Pt/DLC/Pt structures based on thin (20 nm) high-resistivity layers of diamond-like carbon (DLC). The dependence of electrical conductivity sigma on electric field E was found to have a threshold character and obeys law ln sigma(E) proportional to E-1/2. The revealed features are explained based on the concept of non-ohmic properties of disordered systems with a random Coulomb potential, which is formed in DLC layers by fluctuations of their composition associated with the presence of low-resistance sp(2) nanoclusters in a diamond-like sp(3) matrix. The characteristic size of sp(2) nanoclusters estimated using the percolation model is approximate to 4 nm.
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页码:1196 / 1200
页数:5
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