Large and Anisotropic Linear Magnetoresistance in Single Crystals of Black Phosphorus Arising From Mobility Fluctuations.
Large and Anisotropic Linear Magnetoresistance in Single Crystals of Black Phosphorus Arising From Mobility Fluctuations.
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黑磷单晶中由迁移率波动引起的大且各向异性线性磁阻
DOI：
10.1038/srep23807
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发表时间：
2016-03-31
影响因子：
4.6
通讯作者：
Wang W
中科院分区：
文献类型：
--
作者：
Hou Z;Yang B;Wang Y;Ding B;Zhang X;Yao Y;Liu E;Xi X;Wu G;Zeng Z;Liu Z;Wang W
黑磷（BP）由于其高迁移率和合适的带隙在光电子和柔性器件中的潜在应用，目前在全球范围内吸引了巨大的研究兴趣。理论预测，BP具有很大的方向依赖的电和磁输运各向异性。因此，对BP的磁输运性质的研究可能为研究层状材料中的电子输运性质提供一个新的平台。然而，据我们所知，磁输运的研究，特别是各向异性磁阻（MR）效应在层状BP，很少有报道。在这里，我们报告了一个大的线性MR高达510%，在7特斯拉的磁场在单晶BP。对MR的温度和角度依赖性的分析表明，我们样本中的大线性MR源于迁移率波动。此外，我们发现，大的线性MR分层BP实际上遵循三维行为，而不是一个二维的。我们的研究结果有影响的基本理解和磁阻器件的应用BP。
Black Phosphorus (BP) is presently attracting immense research interest on the global level due to its high mobility and suitable band gap for potential application in optoelectronics and flexible devices. It was theoretically predicted that BP has a large direction-dependent electrical and magnetotransport anisotropy. Investigations on magnetotransport of BP may therefore provide a new platform for studying the nature of electron transport in layered materials. However, to the best of our knowledge, magnetotransport studies, especially the anisotropic magnetoresistance (MR) effect in layered BP, are rarely reported. Here, we report a large linear MR up to 510% at a magnetic field of 7 Tesla in single crystals of BP. Analysis of the temperature and angle dependence of MR revealed that the large linear MR in our sample originates from mobility fluctuations. Furthermore, we reveal that the large linear MR of layered BP in fact follows a three-dimensional behavior rather than a two-dimensional one. Our results have implications to both the fundamental understanding and magnetoresistive device applications of BP.