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首页> 外文期刊>Physical review >Yttrium iron garnet thickness and frequency dependence of the spin-charge current conversion in YIG/Pt systems
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Yttrium iron garnet thickness and frequency dependence of the spin-charge current conversion in YIG/Pt systems

机译：YIG / Pt系统中钇铁石榴石的厚度和自旋电荷电流转换的频率依赖性

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摘要

We report the frequency dependence of the spin current emission (spin pumping) in a hybrid ferrimagnetic insulatorormal metal system as a function of the insulating layer thickness. The system is based on an yttrium iron garnet (YIG) film [0.2, 1, and 3 μm] grown by liquid-phase epitaxy coupled with a spin current detector of platinum[6 nm]. A strong YIG thickness dependence of the efficiency of the spin pumping has been observed. The highest conversion factor Δ V/P_(abs) has been demonstrated for the thinner YIG (1.79 and 0.55 mV/mW at 2.5 and 10 GHz, respectively), which is of interest for research heading towards YIG-based devices. Furthermore, we demonstrate the threshold frequency dependence of the three-magnon splitting process, which is shown to cease to exist for the thinner YIG of 0.2 μm.
机译：我们报告了在混合亚铁磁绝缘体/普通金属系统中，自旋电流发射（自旋泵浦）的频率依赖性与绝缘层厚度的关系。该系统基于液相外延生长并结合铂的自旋电流检测器[6 nm]的钇铁石榴石（YIG）膜[0.2、1和3μm]。已经观察到自旋泵浦效率的强烈的YIG厚度依赖性。对于较薄的YIG（在2.5 GHz和10 GHz时分别为1.79和0.55 mV / mW），已经证明了最高的转换因子ΔV / P_（abs），这对于基于YIG的器件的研究很有意义。此外，我们证明了三磁子分裂过程的阈值频率依赖性，这表明对于0.2μm的更薄YIG不再存在。

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  • 来源
    《Physical review》 |2014年第21期|214434.1-214434.5|共5页
  • 作者

    V. Castel; N. Vlietstra; B. J. van Wees; J. Ben Youssef;

  • 作者单位

    Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands;

    Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands;

    Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Groningen, The Netherlands;

    Laboratoire de Magnetisme de Bretagne, CNRS, Universite de Bretagne Occidentale, Brest, France;

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  • 正文语种 eng
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  • 关键词

    current-driven spin pumping; electronic conduction in metals and alloys; spin waves;

    机译：电流驱动的自旋泵浦;金属和合金中的电子传导;自旋波;

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