Force-detected high-frequency electron spin resonance spectroscopy using magnet-mounted nanomembrane: Robust detection of thermal magnetization modulation.
Force-detected high-frequency electron spin resonance spectroscopy using magnet-mounted nanomembrane: Robust detection of thermal magnetization modulation.
复制标题
使用磁体安装的纳米膜进行力检测高频电子自旋共振光谱：热磁化调制的稳健检测。
DOI：
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发表时间：
2018
影响因子：
1.6
通讯作者：
H. Ohta
中科院分区：
文献类型：
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作者：
Hideyuki Takahashi;T. Okamoto;K. Ishimura;S. Hara;E. Ohmichi;H. Ohta
在这项研究中，我们报告了一种概念新颖的宽带高频电子自旋共振（hesr）光谱技术。与普通的力检测电子自旋共振（ESR）技术检测由于饱和效应引起的磁化变化不同，该方法测量的是共振时样品温度变化引起的磁化变化。为了证明其原理，我们开发了一种基于氮化硅纳米膜的力检测ESR光谱仪，该光谱仪即使在高磁场下也能稳定工作。对不同自旋松弛时间的样品进行了测试测量。我们成功地在15t磁场和636ghz频率下获得了无缝的ESR频谱，没有明显的频谱畸变。获得了1012个自旋/G s的高自旋灵敏度，该灵敏度与自旋弛豫时间无关。这些结果表明，该技术可以作为一种实用的方法应用于高通量快堆技术适用的研究领域。
In this study, we report a conceptually novel broadband high-frequency electron spin resonance (HFESR) spectroscopic technique. In contrast to the ordinary force-detected electron spin resonance (ESR) technique, which detects the magnetization change due to the saturation effect, this method measures the magnetization change due to the change of the sample temperature at resonance. To demonstrate its principle, we developed a silicon nitride nanomembrane-based force-detected ESR spectrometer, which can be stably operated even at high magnetic fields. Test measurements were performed for samples with different spin relaxation times. We succeeded in obtaining a seamless ESR spectrum in magnetic fields of 15 T and frequencies of 636 GHz without significant spectral distortion. A high spin sensitivity of 1012 spins/G s was obtained, which was independent of the spin relaxation time. These results show that this technique can be used as a practical method in research fields where the HFESR technique is applicable.