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arXiv 2203.04486cond-mat.mes-hall
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非磁性ZrTe2纳米片电导率涨落引起的磁输运

Magnetotransport due to conductivity fluctuations in non-magnetic ZrTe2 nanoplates

Jie Wang, Yihao Wang, Min Wu, Junbo Li, Shaopeng Miao, Qingyi Hou, Yun Li, Jianhui Zhou, Xiangde Zhu, Yimin Xiong, Wei Ning, Mingliang Tian

摘要:

过渡金属二硫属化合物具有特殊的能带结构,具有各种优异的物理性质,引起了人们的广泛研究兴趣。在这里,我们进行了系统的磁输运测量机械剥离制备的ZrTe 2纳米片。我们发现,在平行的电场和磁场的存在下,在高场区观察到的负纵向磁阻可以源于由于过量的Zr在纳米片的电导率波动。此外,参数图,平面霍尔电阻率作为面内各向异性磁阻率的函数,具有椭圆形图案,轨道中心偏移,这进一步加强了电导率波动的证据。我们的工作提供了一些有用的见解输运现象的拓扑材料。

英文摘要:

Transition metal dichalcogenides with nontrivial band structures exhibit various fascinating physical properties and have sparked intensively research interest. Here, we performed systematic magnetotransport measurements on mechanical exfoliation prepared ZrTe2 nanoplates. We revealed that the negative longitudinal magnetoresistivity observed at high field region in the presence of parallel electric and magnetic fields could stem from the conductivity fluctuations due to the excess Zr in the nanoplates. In addition, the parametric plot, the planar Hall resistivity as function of the in-plane anisotropic magnetoresistivity, has an ellipse-shaped pattern with shifted orbital center, which further strengthen the evidence for the conductivity fluctuations. Our work provides some useful insights into transport phenomena in topological materials.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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