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Magnetization Curve of Two-Dimensional Anti-ferromagnetic Solid 3He on Graphite

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Abstract

Two-dimensional anti-ferromagnetic solid 3He on graphite, so called 4/7 phase, is a highly frustrated magnetic system and its ground state is considered to be a gapless spin liquid. Then how is the behavior in high magnetic fields? We tried to observe the magnetization curve at around 1 mK in high magnetic fields up to 10 T, using a Faraday-type magnetometer. To eliminate a large background signal from graphite as a substrate and copper as a thermal link, a double gradient coil system is employed to produce opposite field gradients in two regions equidistant from the field center. Preliminary results of the 4/7 phase on graphite show no saturated magnetization even at 1 mK and 10 T, suggesting the existence of magnetization plateau.

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Authors and Affiliations

  1. The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan

    Akira Yamaguchi, Hirofumi Nema, Yuichi Tanaka & Hidehiko Ishimoto

Authors
  1. Akira Yamaguchi
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  2. Hirofumi Nema
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  3. Yuichi Tanaka
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  4. Hidehiko Ishimoto
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Correspondence to Akira Yamaguchi.

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Yamaguchi, A., Nema, H., Tanaka, Y. et al. Magnetization Curve of Two-Dimensional Anti-ferromagnetic Solid 3He on Graphite. J Low Temp Phys 148, 755–759 (2007). https://doi.org/10.1007/s10909-007-9434-6

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  • DOI: https://doi.org/10.1007/s10909-007-9434-6

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