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首页> 外文期刊>Japanese journal of applied physics >Magnetic Response and Spin Polarization of Bulk Cr Tips for In-Field Spin-Polarized Scanning Tunneling Microscopy
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Magnetic Response and Spin Polarization of Bulk Cr Tips for In-Field Spin-Polarized Scanning Tunneling Microscopy

机译：场内自旋极化扫描隧道显微镜的块状Cr尖端的磁响应和自旋极化

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摘要

The magnetic properties of bulk Cr tips have been investigated by spin-polarized scanning tunneling spectroscopy (SP-STS). To extract the properties of the Cr tips, we performed low-temperature SP-STS measurements on a well-known model system: nanometric Co islands on Cu(111). Our experiments indicate the existence of uncompensated magnetic moments at the apex of the Cr tips, which rotate in the direction of the applied vertical magnetic field and become aligned with it at approximately 2T. We extracted a tip spin polarization of 45% at the Fermi energy. We showed that the tip spin polarization can change with a modification of the tip apex.
机译：Cr块体的磁性能已通过自旋极化扫描隧道光谱（SP-STS）研究。为了提取Cr尖端的特性，我们在一个著名的模型系统上进行了低温SP-STS测量：Cu（111）上的纳米Co岛。我们的实验表明，在Cr尖端的顶点处存在未补偿的磁矩，这些磁矩沿所施加的垂直磁场的方向旋转并在大约2T时与之对齐。我们在费米能量下提取了45％的尖端自旋极化。我们表明，尖端自旋极化可以随着尖端顶点的改变而改变。

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  • 来源
    《Japanese journal of applied physics》 |2012年第3issue1期|p.030208.1-030208.3|共3页
  • 作者

    Marco Corbetta; Safia Ouazi; Jerome Borme; Yasmine Nahas; Fabio Donati; Hirofumi Oka; Sebastian Wedekind; Dirk Sander; Jurgen Kirschner;

  • 作者单位

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany,International Iberian Nanotechnology Laboratory, Avenida Mestre Jose Veiga, 4715-310 Braga, Portugal;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany,Dipartimento di Energia and NEMAS—Center for NanoEngineered Materials and Surfaces, Politecnico di Milano,via Ponzio 34/3, 1-20133 Milano, Italy;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;

    Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany;

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