Carrier-mediated ferromagnetism in single crystalline (Co, Ga)-codoped ZnO films

Zhonglin Lu, Hua Shu Hsu, Yon-Hua Tzeng, Jung-Chun Huang

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55 Citations (Scopus)

Abstract

Metallic (Co, Ga)-codoped ZnO single crystalline films have been grown by molecular beam epitaxy. Besides room temperature ferromagnetism, the anomalous hall effect (AHE) due to spin-orbit interaction was also found. The small AHE signals match quantitatively with the magnetic hysteresis and can be correspondent to the intrinsic ferromagnetism in a true diluted magnetic oxide with charge carrier spin polarization. Both the saturation magnetization and AHE can be significantly enhanced by additional carrier doping, revealing that the ferromagnetism is carrier mediated in (Co, Ga)-codoped ZnO films.

Original languageEnglish
Article number152507
JournalApplied Physics Letters
Volume94
Issue number15
DOIs
Publication statusPublished - 2009 Apr 27

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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