Large magnetoresistance in metamagnetic CoMnSi0.88Ge0.12 alloy |
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| Authors: | Zhang Cheng-Liang Wang Dun-Hui Cao Qing-Qi Xuan Hai-Cheng Ma Sheng-Can Du You-Wei |
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| Affiliation: | National Laboratory of Solid State Microstructures and Key Laboratory of Nanomaterials for Jiangsu Province, Nanjing University, Nanjing 210093, China |
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| Abstract: | The magneto-transport properties are investigated inmetamagnetic CoMnSi0.88Ge0.12 alloy. By applying amagnetic field or increasing temperature, a metamagnetic phasetransition from antiferromagnetic to ferromagnetic is observed inthis alloy. Around the metamagnetic phase transition,CoMnSi0.88Ge0.12 alloy exhibits a large and negativemagnetoresistance effect (～ 32%) under a magnetic field of20~kOe (1~Oe = 79.5775~A/m), which is ascribed to the spin-dependentscattering of conduction electrons. |
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| Keywords: | metamagnetic magnetoresistance |
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