A1 Refereed original research article in a scientific journal
Millimeter-Wave Band Resonator with Surface Coil for DNP-NMR Measurements
Authors: Ishikawa Yuya, Koizumi Yuta, Fujii Yutaka, Oida Tomoki, Fukuda Akira, Lee Soonchil, Kobayashi Eiichi, Kikuchi Hikomitsu, Järvinen Jarno, Vasiliev Sergey, Mitsudo Seitaro
Publisher: SPRINGER WIEN
Publication year: 2021
Journal: Applied Magnetic Resonance
Journal name in source: APPLIED MAGNETIC RESONANCE
Journal acronym: APPL MAGN RESON
Volume: 52
Issue: 4
First page : 317
Last page: 335
Number of pages: 19
ISSN: 0937-9347
DOI: https://doi.org/10.1007/s00723-021-01328-z
Abstract
In this study, we developed a surface coil with a meanderline shape for nuclear magnetic resonance (NMR) combined with a Fabry-Perot resonator (FPR) for millimeter-wave band electron-spin resonance (ESR). Our goal was to perform both NMR and ESR measurements with high sensitivity, in particular for thin samples, such as a silicon wafer. We measured NMR signals using a variety of meanderline coil shapes and determined the optimal turn number of the meanderline as well as the clearance length between the lines. The FPR consisted of spherical and flat mirrors, where the latter was constructed of a thin gold layer with the meanderline underneath. We observed that the meanderline provided high sensitivity when the gold layer was sufficiently thin at approximately 16 nm. We also measured millimeter-wave ESR from a thin sample of phosphorous-doped silicon with the developed FPR with the meanderline.
In this study, we developed a surface coil with a meanderline shape for nuclear magnetic resonance (NMR) combined with a Fabry-Perot resonator (FPR) for millimeter-wave band electron-spin resonance (ESR). Our goal was to perform both NMR and ESR measurements with high sensitivity, in particular for thin samples, such as a silicon wafer. We measured NMR signals using a variety of meanderline coil shapes and determined the optimal turn number of the meanderline as well as the clearance length between the lines. The FPR consisted of spherical and flat mirrors, where the latter was constructed of a thin gold layer with the meanderline underneath. We observed that the meanderline provided high sensitivity when the gold layer was sufficiently thin at approximately 16 nm. We also measured millimeter-wave ESR from a thin sample of phosphorous-doped silicon with the developed FPR with the meanderline.
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