Giant negative magnetoresistance in Manganese-substituted Zinc Oxide

X. L. Wang; Q. Shao; A. Zhuravlyova; M. He; Y. Yi; R. Lortz; J. N. Wang; A. Ruotolo

doi:10.1038/srep09221

Giant negative magnetoresistance in Manganese-substituted Zinc Oxide

X. L. Wang, Q. Shao, A. Zhuravlyova, M. He, Y. Yi, R. Lortz, J. N. Wang, A. Ruotolo^*

^*Corresponding author for this work

CityUHK Shenzhen Research Institute

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

33 Citations (Scopus)

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Abstract

We report a large negative magnetoresistance in Manganese-substituted Zinc Oxide thin films. This anomalous effect was found to appear in oxygen-deficient films and to increase with the concentration of Manganese. By combining magnetoresistive measurements with magneto-photoluminescence, we demonstrate that the effect can be explained as the result of a magnetically induced transition from hopping to band conduction where the activation energy is caused by the sp-d exchange interaction.

Original language	English
Article number	9221
Journal	Scientific Reports
Volume	5
Online published	18 Mar 2015
DOIs	https://doi.org/10.1038/srep09221
Publication status	Published - 2015

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abstract = "We report a large negative magnetoresistance in Manganese-substituted Zinc Oxide thin films. This anomalous effect was found to appear in oxygen-deficient films and to increase with the concentration of Manganese. By combining magnetoresistive measurements with magneto-photoluminescence, we demonstrate that the effect can be explained as the result of a magnetically induced transition from hopping to band conduction where the activation energy is caused by the sp-d exchange interaction.",

author = "Wang, {X. L.} and Q. Shao and A. Zhuravlyova and M. He and Y. Yi and R. Lortz and Wang, {J. N.} and A. Ruotolo",

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T1 - Giant negative magnetoresistance in Manganese-substituted Zinc Oxide

AU - Wang, X. L.

AU - Shao, Q.

AU - Zhuravlyova, A.

AU - He, M.

AU - Yi, Y.

AU - Lortz, R.

AU - Wang, J. N.

AU - Ruotolo, A.

PY - 2015

Y1 - 2015

N2 - We report a large negative magnetoresistance in Manganese-substituted Zinc Oxide thin films. This anomalous effect was found to appear in oxygen-deficient films and to increase with the concentration of Manganese. By combining magnetoresistive measurements with magneto-photoluminescence, we demonstrate that the effect can be explained as the result of a magnetically induced transition from hopping to band conduction where the activation energy is caused by the sp-d exchange interaction.

AB - We report a large negative magnetoresistance in Manganese-substituted Zinc Oxide thin films. This anomalous effect was found to appear in oxygen-deficient films and to increase with the concentration of Manganese. By combining magnetoresistive measurements with magneto-photoluminescence, we demonstrate that the effect can be explained as the result of a magnetically induced transition from hopping to band conduction where the activation energy is caused by the sp-d exchange interaction.

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U2 - 10.1038/srep09221

DO - 10.1038/srep09221

M3 - RGC 21 - Publication in refereed journal

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SN - 2045-2322

VL - 5

JO - Scientific Reports

JF - Scientific Reports

M1 - 9221

ER -

Giant negative magnetoresistance in Manganese-substituted Zinc Oxide

Abstract

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