刘艳平

教授 博士生导师 硕士生导师

入职时间:2017-03-20

所在单位:物理学院

职务:量子物理研究所副所长

学历:博士研究生毕业

办公地点:中南大学物理学院536房

性别:男

联系方式:邮箱:liuyanping@foxmail.com 电话:0731-88879148

学位:博士学位

主要任职:1. 湖南省侨联特聘专家委员会委员. 2. 中国科协和中国教育部“英才计划 ”导师。 3. 瑞典国际先进材料会士(Fellow of IAAM)。4. Nano Research ( Young Star Editors )。5. Nano Research 编委 (Editorial Board)。6. Nano-Micro Letters 青年编委。

毕业院校:新加坡南洋理工大学(NTU)/日本理化学研究所(RIKEN)

学科:物理学
电子科学与技术

学术荣誉:

2018  当选:  学术新人奖

2020  当选:  省高端人才

曾获荣誉:

〇2017年湖南省青年百人计划

〇2018年湖南省科技创新人才(优秀人才)

〇2018年湖南省十大杰出青年海归人物

〇2019年湖南省121创新人才工程(第三层次)

〇2020年湖南省杰出青年科学基金

〇2020年"芙蓉学者奖励计划"特聘教授

〇“中学生英才计划”十周年优秀导师

〇2021年Journal of Electronics Science and Technology执行编委

〇2023年Nano Research编委团队(Editorial Board)

〇2023年Nano-Micro Letters青年编委(Youth Editorial Board Member)

Yanping Liu*(刘艳平); Zeng, C.; Ding, J. N.; Zhong, J. H.; Gao, Y. J.; Kuang, X. F.; Yu, J.; Cao, L. K.; He, J.; Liu, Z. W. Effect of the Low-resistance Tunnel Barriers Induced Inhomogeneous Spin Current Distribution in Graphene Crossed Configuration Lateral Spin Valve

发布时间:2020-04-05

点击次数:

DOI码:10.1063/1.5088200

发表刊物:AIP Advances

关键字:Spin transport, spin injection, spin valve, spin-polarized current,tunnel barrier.

摘要:The non-local spin valve (NLSV) configuration compose of two ferromagnetic (FM) and non-magnetic (NM) channels, which is an effective method for determining spin injection and accumulation. Here, we report that a reversed non-local spin signal was detected by changing the voltage probe configurations in graphene (Py/MgO/Graphene/MgO/Py) lateral spin valves. The abnormal reversed spin-dependent non-local voltage is attributed to the non-uniform pinhole at the interface of the low-resistance tunnel barrier, which yields the charge current to flow through the detection electrode and return to the graphene channel. We demonstrate that the channel-width induced spin-polarized current inhomogeneity that significantly contributes to non-local resistance. A detailed description and simulated results of the tunnel junctions provide evidence for the reversal of the Non-local voltage sign induced by the low-resistance tunnel barriers. Our work sheds light on the understanding of the spatial distribution of the spin current and the effect of the tunnel barrier, which are essential for the development of spintronic devices.

论文类型:期刊论文

文献类型:J

卷号:9

期号:11

页面范围:115005

是否译文:

发表时间:2019-09-10

收录刊物:SCI

发布期刊链接:https://aip.scitation.org/doi/pdf/10.1063/1.5088200

附件:

  • Effect of the low-resistance tunnel barriers induced inhomogeneous spin current distribution in graphene crossed configuration lateral spin valve.pdf

  • 上一条: . J. Yu; XF. Kuang; YJ. Gao; YP. Wang; KQ. Chen; Liu, Z. W., Yanping Liu*(刘艳平). Direct Observation of Linear Dichroism Transition in Two-dimensional Palladium Diselenide

    下一条: Yanping Liu*(刘艳平); Zhang, S. Y.; He, J.; Wang, Z. M. M.; Liu, Z. W. Recent progress in the fabrication, properties, and devices of heterostructures based on 2D materials