Note: High sensitivity pulsed electron spin resonance spectroscopy with induction detection.
Note: High sensitivity pulsed electron spin resonance spectroscopy with induction detection.
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注：具有感应检测功能的高灵敏度脉冲电子自旋共振光谱。
DOI：
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发表时间：
2011
影响因子：
1.6
通讯作者：
A. Blank
中科院分区：
文献类型：
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作者：
Y. Twig;Ekaterina Dikarov;W. Hutchison;A. Blank
商业电子自旋共振光谱和成像系统利用所谓的“感应”或“法拉第”检测，其基于射频线圈或微波谐振器。感应检测的灵敏度不超过~3 × 10（8）转/赫兹。在这里，我们表明，通过使用一种新型的表面环隙微谐振器（内部尺寸为20 μm），在低温和0.5T的磁场下工作，可以将这个灵敏度势垒提高两个数量级以上，达到~1.5 × 10（6）自旋/μ Hz或~2.5 × 10（4）自旋1小时的自旋灵敏度。
Commercial electron spin resonance spectroscopy and imaging systems make use of the so-called "induction" or "Faraday" detection, which is based on a radio frequency coil or a microwave resonator. The sensitivity of induction detection does not exceed ~3 × 10(8) spins/√Hz. Here we show that through the use of a new type of surface loop-gap microresonators (inner size of 20 μm), operating at cryogenic temperatures at a field of 0.5 T, one can improve upon this sensitivity barrier by more than 2 orders of magnitude and reach spin sensitivities of ~1.5 × 10(6) spins/√Hz or ~2.5 × 10(4) spins for 1 h.