Polaronic transport and magnetism in Ag-doped ZnO

M. He; Y. F. Tian; D. Springer; I. A. Putra; G. Z. Xing; E. E.M. Chia; S. A. Cheong; T. Wu

doi:10.1063/1.3665401

Polaronic transport and magnetism in Ag-doped ZnO

M. He, Y. F. Tian, D. Springer, I. A. Putra, G. Z. Xing, E. E.M. Chia, S. A. Cheong, T. Wu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

Magnetic polarons have been proposed to play important roles in doped wide band gap oxides that exhibit weak room temperature ferromagnetism. Here, we report the experimental evidence supporting polaronic magnetism and transport in Ag-doped ZnO. Temperature dependent resistivity data suggest the conduction mechanism of Mott and Efros variable range hopping. The observed weak ferromagnetism and its temperature dependence are explained using the percolation-based model of partially ordered bound magnetic polarons.

Original language	English (US)
Article number	222511
Journal	Applied Physics Letters
Volume	99
Issue number	22
DOIs	https://doi.org/10.1063/1.3665401
State	Published - Nov 28 2011
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AU - Tian, Y. F.

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AU - Xing, G. Z.

AU - Chia, E. E.M.

AU - Cheong, S. A.

AU - Wu, T.

PY - 2011/11/28

Y1 - 2011/11/28

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AB - Magnetic polarons have been proposed to play important roles in doped wide band gap oxides that exhibit weak room temperature ferromagnetism. Here, we report the experimental evidence supporting polaronic magnetism and transport in Ag-doped ZnO. Temperature dependent resistivity data suggest the conduction mechanism of Mott and Efros variable range hopping. The observed weak ferromagnetism and its temperature dependence are explained using the percolation-based model of partially ordered bound magnetic polarons.

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Polaronic transport and magnetism in Ag-doped ZnO

Abstract

ASJC Scopus subject areas

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