Microstrip resonators for electron‐spin resonance
Microstrip resonators for electron‐spin resonance
复制标题
用于电子自旋谐振的微带谐振器
DOI：
10.1063/1.1142418
复制
发表时间：
1991
影响因子：
1.6
通讯作者：
R. H. Silsbee
中科院分区：
文献类型：
--
作者：
W. J. Wallace;R. H. Silsbee
薄膜和界面电子自旋共振（ESR）的直接检测将传统技术推向了这些技术的噪声极限，并且需要使用大面积样品。这里将几种微带谐振器结构与传统技术进行了比较，并报告了实验结果。铝微带谐振器被证明对二维系统的灵敏度是波导腔的3到10倍，而只需要大约1/20的样品面积。报道了一种用于研究反型层传导电子自旋共振的微带谐振器金属氧化物超导场效应晶体管结构，其中谐振器作为栅极，与反型层形成欧姆接触。本文介绍了一种“微带感应光谱仪”，它沿着一个低温冷却放大器和一个双模微带谐振器，用于研究具有很长弛豫时间的谱线。该谱仪对居里定律自旋的最终灵敏度为1×108。
Direct detection of thin‐film and interfacial electron‐spin resonance (ESR) pushes conventional techniques to the noise limit for those techniques and requires use of large‐area samples. Several microstrip resonator structures are compared here to conventional techniques and experimental results reported. Aluminum microstrip resonators are shown to have from 3 to 10 times the sensitivity to two‐dimensional systems as waveguide cavities, while needing only about 1/20th the sample area. A microstrip resonator metal‐oxide‐superconductor field‐effect‐transistor structure for study of inversion layer conduction electron‐spin resonance is reported in which the resonator functions as the gate, and ohmic contact is made to the inversion layer. A ‘‘microstrip induction spectrometer’’ is described in which a bimodal microstrip resonator is used along with a cryogenically cooled amplifier for study of lines with very long relaxation times. The ultimate sensitivity to Curie law spins of this spectrometer is 1×108 spi...