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In-plane magnetic field tolerance of a dispersive aluminum nanobridge SQUID magnetometer

机译:分散铝纳米桥SQUID磁力计的面内磁场容限

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摘要

We characterize the flux sensitivity of a dispersive 3D aluminum nanobridge superconducting quantum interference device (SQUID) magnetometer as a function of applied in-plane magnetic field. In zero field, we observe an effective flux noise of 17 nφ_o/Hz~(1/2) with 25 MHz of bandwidth at 150 mK. Flux noise increased by less than a factor of three with parallel magnetic fields up to 61 mT. Operation in higher fields may be possible by decreasing the dimensions of the shunt capacitor in the magnetometer circuit. These devices are thus well suited for observing high-speed dynamics in nanoscale magnets, even in the presence of moderate bias magnetic fields.
机译:我们将色散3D铝纳米桥超导量子干扰设备(SQUID)磁力计的磁通灵敏度表征为所施加平面内磁场的函数。在零场中,我们观察到有效通量噪声为17nφ_o/ Hz〜(1/2),在150 mK时带宽为25 MHz。在平行磁场高达61 mT的情况下,通量噪声增加不到三倍。通过减小磁力计电路中并联电容器的尺寸,可以在更高的磁场中工作。因此,即使存在中等偏置磁场,这些设备也非常适合观察纳米级磁体中的高速动力学。

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  • 来源
    《Applied Physics Letters》 |2013年第23期|232602.1-232602.4|共4页
  • 作者单位

    Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA;

    Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA;

    Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA,Department of Physics, University of Chicago, Chicago, Illinois 60657, USA.;

    Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA,Chevron, 1400 Smith Street, Suite 19140, Houston, Texas 77002, USA.;

    Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA,Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA.;

    Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA,Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India;

    Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA;

  • 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 2022-08-18 03:16:30

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