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Dual function armchair graphene nanoribbon-based spin-photodetector: Optical spin-valve and light helicity detector

机译:基于双功能扶手椅石墨烯纳米带的自旋光电探测器:光学自旋阀和光螺旋度探测器

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摘要

We show an armchair graphene nanoribbon channel connected between asymmetric ferromagnetic source-drain structure—i.e., p-type Co/Au/graphene source and n-type Co/Cu/graphene drain—can operate as dual function spin-photodetector, under zero external biases at room temperature. It can function as an optical spin-valve with magnetoresistance of greater than 60% and responsivity as high as 25.12 A/mW, when irradiated by an un-polarized light of energy ∼3.03 eV. Under a circularly polarized illumination, this optical spin-valve can also operate as a light helicity detector. The calculated magnetoresistances for right and left circularly polarized lights are both greater than 60%.
机译:我们展示了一个扶手椅石墨烯纳米带通道,该通道连接在不对称铁磁源-漏结构(即p型Co / Au /石墨烯源和n型Co / Cu /石墨烯漏)之间,可在零外部环境下用作双功能自旋光电探测器。在室温下有偏差。当被约3.03 eV的非偏振光照射时,它可以用作光学自旋阀,磁阻大于60%,响应度高达25.12 A / mW。在圆偏振照明下,该光学自旋阀也可以用作光螺旋度检测器。左右圆偏振光的磁阻均大于60%。

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  • 来源
    《Applied Physics Letters》 |2014年第7期|1-5|共5页
  • 作者单位

    Department of Physics, Tarbiat Modares University, P.O. Box 14115-335, Tehran 1411713116, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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  • 入库时间 2022-08-17 13:10:24

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