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Improved accuracy in high-frequency AC transport measurements in pulsed high magnetic fields
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Mitamura, Hiroyuki, Watanuki, Ryuta, Kampert, Erik, Förster, Tobias, Matsuo, Akira, Onimaru, Takahiro, Onozaki, Norimichi, Amou, Yuta, Wakiya, Kazuhei, Matsumoto, Keisuke T., Yamamoto, Isao, Suzuki, Kazuya, Zherlitsyn, Sergei, Wosnitza, Joachim, Tokunaga, Masashi, Kindo, Koichi and Sakakibara, Toshiro (2020) Improved accuracy in high-frequency AC transport measurements in pulsed high magnetic fields. Review of Scientific Instruments, 91 (12). 125107. doi:10.1063/5.0014986 ISSN 0034-6748.
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Official URL: http://dx.doi.org/10.1063/5.0014986
Abstract
We show theoretically and experimentally that accurate transport measurements are possible even within the short time provided by pulsed magnetic fields. For this purpose, a new method has been devised, which removes the noise component of a specific frequency from the signal by taking a linear combination of the results of numerical phase detection using multiple integer periods. We also established a method to unambiguously determine the phase rotation angle in AC transport measurements using a frequency range of tens of kilohertz. We revealed that the dominant noise in low-frequency transport measurements in pulsed magnetic fields is the electromagnetic induction caused by mechanical vibrations of wire loops in inhomogeneous magnetic fields. These results strongly suggest that accurate transport measurements in short-pulsed magnets are possible when mechanical vibrations are well suppressed.
Item Type: | Journal Article | |||||||||||||||||||||||||||
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Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Electromagnetic fields, Magnetic fields, Magnetic fields -- Measurement | |||||||||||||||||||||||||||
Journal or Publication Title: | Review of Scientific Instruments | |||||||||||||||||||||||||||
Publisher: | American Institute of Physics | |||||||||||||||||||||||||||
ISSN: | 0034-6748 | |||||||||||||||||||||||||||
Official Date: | 11 December 2020 | |||||||||||||||||||||||||||
Dates: |
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Volume: | 91 | |||||||||||||||||||||||||||
Number: | 12 | |||||||||||||||||||||||||||
Article Number: | 125107 | |||||||||||||||||||||||||||
DOI: | 10.1063/5.0014986 | |||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||
Date of first compliant deposit: | 11 December 2020 | |||||||||||||||||||||||||||
Date of first compliant Open Access: | 14 December 2020 | |||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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