High-frequency electron spin resonance system using a microcantilever and a pulsed magnetic field.
High-frequency electron spin resonance system using a microcantilever and a pulsed magnetic field.
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使用微悬臂梁和脉冲磁场的高频电子自旋共振系统。
DOI：
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发表时间：
2009
影响因子：
1.6
通讯作者：
T. Osada
中科院分区：
文献类型：
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作者：
E. Ohmichi;N. Mizuno;M. Kimata;H. Ohta;T. Osada
提出了一种脉冲磁场中高频电子自旋共振(ESR)的新技术。我们的技术是基于使用微悬臂梁对与ESR吸收相关的磁化变化的磁检测。在高达2.4T的脉冲磁场中，我们成功地在130 GHz的毫米波范围内观测到了微晶体(质量约为1微克)的ESR信号。这一结果相当于自旋灵敏度约为10(11)Spins/G，比传统的透射型ESR技术提高了四个数量级。
A novel technique of high-frequency electron spin resonance (ESR) in a pulsed magnetic field is presented. Our technique is based on the magnetic detection of a magnetization change associated with the ESR absorption using a microcantilever. We successfully observed ESR signals of a microcrystal (mass approximately 1 microg) in the millimeter-wave region up to 130 GHz in pulsed magnetic fields of up to 2.4 T. This result corresponds to the spin sensitivity of approximately 10(11) spins/G, which is four orders of magnitude better than that of conventional transmission-type ESR techniques.