Transport properties of single TiO2 nanotubes

被引：24

作者：

Stiller, Markus ^{[1
]}

Barzola-Quiquia, Jose ^{[1
]}

Lorite, Israel ^{[1
]}

Esquinazi, Pablo ^{[1
]}

Kirchgeorg, Robin ^{[2
]}

Albu, Sergiu P. ^{[2
]}

Schmuki, Patrik ^{[2
,3
]}

机构：

[1] Univ Leipzig, Inst Expt Phys 2, Div Superconduct & Magnetism, D-04103 Leipzig, Germany

[2] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, Chair Surface Sci & Corros, D-91058 Erlangen, Germany

[3] King Abdulaziz Univ, Dept Chem, Jeddah 21413, Saudi Arabia

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 17期

关键词：

ANATASE; TITANIUM; CONDUCTIVITY;

D O I：

10.1063/1.4826640

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the electric transport properties of single TiO2 nanotubes separated from an anodic titania nanotube array. The temperature dependence of the resistance measured with the conventional four point method of all investigated samples show a Mott variable range hopping behavior. The results obtained with two contacts indicate the existence of a potential barrier between the Cr/Au contacts and samples surfaces, which influence is clearly observable at temperatures <150 K. Impedance spectroscopy in the frequency range of 40 Hz to 1 MHz carried out at room temperature indicates that the electronic transport of these polycrystalline tubes is dominated by the grain cores. (C) 2013 AIP Publishing LLC.

引用

页数：4

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