Coupling Sub-nanoliter BDPA Organic Radical Spin Ensembles with YBCO Inverse Anapole Resonators

IF 1.1 4区物理与天体物理 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL Applied Magnetic Resonance Pub Date : 2022-11-02 DOI:10.1007/s00723-022-01505-8

Claudio Bonizzoni, Maksut Maksutoglu, Alberto Ghirri, Johan van Tol, Bulat Rameev, Marco Affronte

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引用次数: 5

Abstract

We report the development and test of planar microwave Inverse Anapole Resonators (IARs) made of superconducting Yttrium Barium Copper Oxide (YBCO) for electron spin resonance spectroscopy on small samples. We first characterize our resonators in zero field and then by carrying out transmission spectroscopy on a diluted \(\alpha ,\gamma \)-bisdiphenylene-\(\beta \)-phenylally (BDPA) organic radical spin ensemble in an applied magnetic field. These IARs allow us to carry out electron spin resonance spectroscopy both in continuous-wave and pulsed-wave mode, and to estimate the spin memory time of BDPA. The comparison with the results obtained for the same sample on typical linear coplanar resonators shows an improvement by \(\approx 2\text { - up to}\,3\) – orders of magnitude in spin sensitivity, with effective sensing volumes below 1 nanoliter. The best sensitivity we achieved is \(S\approx \,10^{7}\,\text {spin}/\sqrt{\mathrm{Hz}}\) in the pulsed-wave regime. These results compare well with similar experiments reported in the literature.

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亚纳升BDPA有机自由基自旋综与YBCO逆模拟谐振腔的耦合

本文报道了由超导钇钡铜氧化物(YBCO)制成的平面微波反赝极谐振器(IARs)在小样品上用于电子自旋共振谱的研制和测试。我们首先在零场中对谐振腔进行了表征，然后在外加磁场中对稀释的\(\alpha ,\gamma \) -双二苯- \(\beta \) -苯基(BDPA)有机自由基自旋系综进行了透射光谱分析。这些红外光谱使我们能够在连续波和脉冲波模式下进行电子自旋共振谱分析，并估计BDPA的自旋记忆时间。与同一样品在典型线性共面谐振器上得到的结果相比，自旋灵敏度提高了\(\approx 2\text { - up to}\,3\) -数量级，有效传感体积小于1纳升。我们获得的最佳灵敏度是\(S\approx \,10^{7}\,\text {spin}/\sqrt{\mathrm{Hz}}\)在脉冲波状态下。这些结果与文献中报道的类似实验结果相比较。

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来源期刊

Applied Magnetic Resonance 物理-光谱学

CiteScore

1.90

自引率

10.00%

发文量

审稿时长

2.3 months

期刊介绍： Applied Magnetic Resonance provides an international forum for the application of magnetic resonance in physics, chemistry, biology, medicine, geochemistry, ecology, engineering, and related fields. The contents include articles with a strong emphasis on new applications, and on new experimental methods. Additional features include book reviews and Letters to the Editor.