Spin polarization in Zn0.95Co0.05O:(Al,Cu) thin films

被引：11

作者：

Hartmann, Lars ^{[1
]}

Xu, Qingyu ^{[1
]}

Schmidt, Heidemarie ^{[1
]}

Hochmuth, Holger ^{[1
]}

Lorenz, Michael ^{[1
]}

Sturm, Chris ^{[1
]}

Meinecke, Christoph ^{[1
]}

Grundmann, Marius ^{[1
]}

机构：

[1] Univ Leipzig, Fak Phys & Geowissensch, Inst Expt Phys 2, D-04103 Leipzig, Germany

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2006年 / 39卷 / 23期

关键词：

D O I：

10.1088/0022-3727/39/23/003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

ZnCoO : Al, ZnCoO : (Al, Cu), and reference samples without Co have been grown by pulsed laser deposition to investigate the influence of Co-dopants and Cu-codopants on the magneto transport properties of ZnO. Positive magnetoresistance and anomalous Hall effect have been observed for ZnCoO : (Al, Cu). Versatile theoretical approaches for modelling positive magnetoresistance in ZnO-based diluted magnetic semiconductors are still to be developed. Negative magnetoresistance due to the scattering of spin-polarized charge carriers at isolated magnetic impurities has been observed in ZnO : (Al, Cu) without Co-dopants and successfully modelled. Cu-codopants enhance the positive and negative magnetoresistance in ZnCoO : Al and ZnO : Al, respectively, by one order of magnitude.

引用

页码：4920 / 4924

页数：5

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