Tunable magnetic and transport properties of single crystalline (Co, Ga)-codoped ZnO films

Zhonglin Lu, Hua Shu Hsu, Yonhua Tzeng, Fengming Zhang, Youwei Du, Jung Chun Andrew Huang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A series of metallic (Co, Ga)-codoped ZnO single crystalline films have been grown by molecular beam epitaxy. All of the films exhibit metallic conducting behavior and high free carrier concentrations. Besides room temperature ferromagnetism, the anomalous Hall effect due to spin-orbit interaction was also found. Both the saturation magnetization and anomalous Hall effect can be tuned by the carrier concentration or conductivity, revealing that the ferromagnetism is carrier mediated in (Co, Ga)-codoped ZnO films. Our experimental observations are consistent with the recent theoretical description of carrier mediated magnetism in Co doped ZnO.

Original languageEnglish
Article number062509
JournalApplied Physics Letters
Volume95
Issue number6
DOIs
Publication statusPublished - 2009 Aug 27

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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