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首页> 外文期刊>Journal of Applied Physics >Magnetic dielectric-graphene-ferroelectric system as a promising non-volatile device for modern spintronics
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Magnetic dielectric-graphene-ferroelectric system as a promising non-volatile device for modern spintronics

机译：磁性介质 - 石墨烯 - 铁电系统作为现代闪奖的有前途的非易失性装置

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摘要

The conductivity of the system magnetic dielectric (EuO)-graphene channel-ferroelectric substrate was considered. The magnetic dielectric locally transforms the band spectrum of graphene by inducing an energy gap in it and making it spin-asymmetric with respect to the free electrons. The range of spontaneous polarization 2-5 mC/m(2) that can be easily realized in thin films of proper and incipient ferroelectrics was under examination. It was demonstrated that if the Fermi level in the graphene channel belongs to energy intervals where the graphene band spectrum, modified by EuO, becomes sharply spin-asymmetric, such a device can be an ideal nonvolatile spin filter. The practical application of the system under consideration would be restricted by a low Curie temperature of EuO. However, alternative magnetic insulators with high Curie temperature (e.g., Y3Fe5O12) can be used for a system operating under ambient conditions. Controlling the Fermi level (e.g., by temperature that changes ferroelectric polarization) can convert a spin filter to a spin valve. Published under license by AIP Publishing.
机译：考虑了系统磁电介质（EUO）型沟道 - 铁电基板的电导率。磁电介质通过诱导其中的能隙并使其相对于自由电子旋转而旋转而局部地改变石墨烯的带谱。在适当和初期铁电性薄膜中可以容易地实现的自发极化2-5mc / m（2）的范围正在检查。据证明，如果石墨烯通道中的费米水平属于由EuO改变的石墨烯带谱的能量间隔变得急剧自旋，这种装置可以是理想的非易失性旋转过滤器。所考虑的系统的实际应用将受到迅速的低居里温度的限制。然而，具有高居里温度（例如，Y3FE5O12）的替代磁绝缘体可用于在环境条件下操作的系统。控制FERMI水平（例如，通过改变铁电偏振的温度）可以将旋转滤波器转换为旋转阀。通过AIP发布在许可证下发布。

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  • 来源
    《Journal of Applied Physics》 |2019年第17期|174105.1-174105.7|共7页
  • 作者

    Kurchak Anatolii I.; Morozovska Anna N.; Strikha Maksym V.;

  • 作者单位

    Natl Acad Sci Ukraine V Lashkariov Inst Semicond Phys Pr Nauky 41 UA-03028 Kiev Ukraine;

    Natl Acad Sci Ukraine Inst Phys Pr Nauky 46 UA-03028 Kiev Ukraine|Natl Acad Sci Ukraine Bogolyubov Inst Theoret Phys 14-b Metrolohichna St UA-03680 Kiev Ukraine;

    Natl Acad Sci Ukraine V Lashkariov Inst Semicond Phys Pr Nauky 41 UA-03028 Kiev Ukraine|Taras Shevchenko Kyiv Natl Univ Fac Radiophys Elect & Comp Syst Pr Akad Hlushkova 4g UA-03022 Kiev Ukraine;

  • 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);
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