Weak Localization and Electron-Electron Interactions in Indium-Doped ZnO Nanowires

作者：Thompson, Richard S^*; Li, Dongdong; Witte, Christopher M; Lu, Jia G

来源：Nano Letters, 2009, 9(12): 3991-3995.

DOI：10.1021/nl902152c

• Laser-assisted chemical vapor depositions
• Magneto-conductivity
• Parallel magnetic field
• Quantum correction
• Quasi-one dimensional
• Surface conductivity
• Temperature dependence
• Weak localization

Single crystal ZnO nanowires doped with indium are synthesized via the laser-assisted chemical vapor deposition method. The conductivity of the nanowires is measured at low temperatures in magnetic fields with directions both perpendicular and parallel to the wire axes. A quantitative fit of our data is obtained, consistent with the theory of a quasi-one-dimensional metallic system with quantum corrections due to weak localization and electron-electron interactions. The anisotropy of the magneto-conductivity agrees with theory. The two quantum corrections are of approximately equal magnitude with respective temperature dependences of T-1/3 and T-1/2. The alternative model of quasi two-dimensional surface conductivity is excluded by the absence of oscillations in the magneto-conductivity in parallel magnetic fields.

• 出版日期2009-12
• 单位上海交通大学