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CURRENT-DEPENDENT POSITIVE MAGNETORESISTANCE IN Ga-DOPED La0.5Ca0.5MnO3 |
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| Authors: | Chen Xin Wang Zhi-hong Li Run-wei Shen Bao-gen Zhao Hong-wu Zhan Wen-shan Chen Jin-song and Zhang Xi-xiang |
| Abstract: | The magnetic and transport properties of the Ga-doped charge-ordering state La0.5Ca0.5MnO3 have been studied. A current-dependent large positive magnetoresistance (1080%) at 5 K was observed. These observations are interpreted in terms of the spin-dependent tunnelling process between ferromagnetic clusters embedded in an antiferromagnetic matrix. |
| Keywords: | manganese oxide magnetoresistance spin-dependent tunnelling |
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