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Development and Applications of High-Frequency ESR up to 55 T

机译：高达55 T的高频ESR的开发和应用

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A multiextreme (high-field, low-temperature, high-pressure and nanoscale) electron spin resonance (ESR) measurement system is under development in Kobe. In this connection, our recent development is introduced and two applications of our high-frequency high-field ESR are described. High-frequency high-field ESR measurements of dioptase (Cu_6Si_0_(18)6H_2O), which has an interesting antiferromagnetic Cu~(2+) network, have been performed using a pulsed magnetic field of up to 55 T. Antiferromagnetic resonances (AFMR) are clearly observed at 4.2 K with the light sources of up to 1017 GHz. However, a deviation from the conventional two-sublattice AFMR theory is observed in the high field. Temperature dependence of the X-band and high-frequency ESR has been also observed in the triangular lattice antiferromagnet EtMe3P[Pd(dmit)2]2 which shows the spin-Peierls-like transition below T _c 25 K. The preliminary field dependence of the spin gap estimated from the analyses of our ESR results has been shown in connection with the previous magnetic susceptibility results
机译：神户正在开发一种多极（高场，低温，高压和纳米级）电子自旋共振（ESR）测量系统。在这方面，介绍了我们的最新发展，并介绍了我们的高频高场ESR的两个应用。使用高达55 T的脉冲磁场进行了具有有趣的反铁磁Cu〜（2+）网络的二聚酶（Cu_6Si_0_（18）6H_2O）的高频高场ESR测量。反铁磁共振（AFMR）在高达1017 GHz的光源下，在4.2 K下清晰可见。但是，在高场中观察到了与传统的两个子格AFMR理论的偏差。在三角晶格反铁磁体EtMe3P [Pd（dmit）2] 2中也观察到了X波段和高频ESR的温度依赖性，它显示了T _c 25 K以下的自旋Peierls样跃迁。通过对我们的ESR结果进行分析所估计出的自旋间隙已与先前的磁化率结果结合在一起显示

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