Electrical conduction of ion tracks in tetrahedral amorphous carbon: temperature, field and doping dependence and comparison with matrix data
Electrical conduction of ion tracks in tetrahedral amorphous carbon: temperature, field and doping dependence and comparison with matrix data
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四面体非晶碳中离子轨迹的电传导:温度、场和掺杂依赖性以及与矩阵数据的比较
DOI:
10.1088/1367-2630/17/12/123009
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发表时间:
2015
影响因子:
3.3
通讯作者:
Weidinger
中科院分区:
文献类型:
--
作者:
Krauser;Gehrke;H.-G.Hofsäss;Trautmann;Weidinger
This paper gives an extended overview of the electrical properties of ion tracks in hydrogen-free tetrahedral amorphous carbon (ta-C) with a sp 3 bond fraction of about 80%. The films were grown by mass selected ion beam deposition of 100 eV 12 C+ ions. The ion tracks are generated by irradiation of ta-C films with uranium ions of 1 GeV kinetic energy. Along the ion path a conversion from diamond-like (sp 3) carbon to graphite-like (sp 2) carbon takes place. Topography and current measurements of individual ion tracks were performed by atomic force microscopy at ambient temperature. The temperature dependence of the electric conductivity was studied between 15 and 390 K by means of 0.28 mm 2 large contact pads averaging over about 10 7 tracks. For each sample and at each temperature the conductivity as a function of the applied electrical field (non-ohmic behaviour) was measured separately and the data were extrapolated to field zero. In this way, the zero-field conductivity was determined independent from the field dependence. In spite of large differences in the absolute values, the temperature dependence of the zero-field conductivities is found to be very similar in shape for all samples. The conductivities follow a
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DOI:
--
发表时间:
1995
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
Kulik;Lempert;Grossman;Marton;Rabalais;Lifshitz
通讯作者:
Lifshitz
DOI:
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1997
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作者:
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1998
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作者:
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通讯作者:
E. Recknagel
DOI:
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发表时间:
2003
期刊:
影响因子:
--
作者:
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通讯作者:
H. Gibhardt
DOI:
10.1016/j.nimb.2011.01.083
发表时间:
2012
影响因子:
1.3
作者:
Krauser;Gehrke;Hofsäss;Trautmann;Weidinger
通讯作者:
Weidinger