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Interfacial resistive oxide switch induced by reversible modification of defect structures

机译:缺陷结构的可逆修饰引起的界面电阻氧化物开关

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摘要

We report on electric field induced bipolar resistive switching in metal electrode-Pr_(0.7)Ca_(0.3)MnO_3 interfaces that exhibit hopping transport. The electrical transport data show that the number of hopping steps needed for a carrier to cross the interfacial layers changes while switching between high and low resistance states. Furthermore, the frequency response of the interfacial ac impedance shows that the layers can be modeled as a percolation network with an effective resistance that is dominated by its bottleneck section. We therefore propose that a reversible creation/annihilation of a few hopping sites within this bottleneck serves as the switching mechanism, which may be of use in the design of future nonvolatile memory devices.
机译:我们报告的电场感应双极电阻切换中表现出跳跃传输的金属电极-Pr_(0.7)Ca_(0.3)MnO_3界面。电传输数据表明,当载体在高阻态和低阻态之间切换时,载体穿过界面层所需的跳变步骤数会发生变化。此外,界面交流阻抗的频率响应表明,可以将层建模为具有有效电阻的渗流网络,该渗流网络的瓶颈部分占主导地位。因此,我们建议在该瓶颈内可逆地创建/消除一些跳变位点作为切换机制,这可能会在未来的非易失性存储设备的设计中使用。

著录项

  • 来源
    《Physical review》 |2009年第16期|992-998|共7页
  • 作者单位

    Department of Physics and Texas Center for Superconductivity, University of Houston, 202 Houston Science Center, Houston, Texas 77204-5002, USA Department of Physics, California State University-San Marcos, 333 S. Twin Oaks Valley Road, San Marcos, California 92096, USA;

    Department of Physics and Texas Center for Superconductivity, University of Houston, 202 Houston Science Center, Houston, Texas 77204-5002, USA;

    Department of Physics and Texas Center for Superconductivity, University of Houston, 202 Houston Science Center, Houston, Texas 77204-5002, USA;

    Department of Physics and Texas Center for Superconductivity, University of Houston, 202 Houston Science Center, Houston, Texas 77204-5002, USA;

    Department of Physics and Texas Center for Superconductivity, University of Houston, 202 Houston Science Center, Houston, Texas 77204-5002, USA Hong Kong University of Science and Technology, Hong Kong, China Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA;

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  • 正文语种 eng
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  • 关键词

    impurity and defect levels; energy states of adsorbed species; defects and impurities: doping, implantation, distribution, concentration, etc.; dielectric loss and relaxation;

    机译:杂质和缺陷水平;吸附物质的能量状态;缺陷和杂质:掺杂;注入;分布;浓度等;介电损耗和弛豫;

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