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Appearance of magnetic long range order in the spin ladder compound LaCuO2.5

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Abstract

We report here the two current topics in the ladder compounds.

1. The new ladder compound LaCuO2.5 recently discovered by Hiroi and Takano shows a clear sign of magnetic long range order at around 125 K observed by μ+SR technique. This result demonstrates that the ground state of LaCuO2.5 is not a spin liquid state, but a magnetically ordered state.

2. Superconductivity has been found in the ladder material (Sr,Ca)14Cu24O41 under high pressure between 3 GPa and 4.5 GPa. The superconducting transition temperatures Tc (onset) are 12 K and 9 K at 3 GPa and 4.5 GPa, respectively.

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Authors and Affiliations

  1. Department of Physics, Aoyama‐Gakuin University, Chitosedai, Setagaya‐ku, Tokyo, 157, Japan

    J. Akimitsu, H. Okajima, A. Yamashita, K. Ishii, T. Yokoo, T. Nagata & M. Uehara

  2. The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, 351–01, Japan

    R. Kadono & K. Nagamine

  3. Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611, Japan

    N. Kobayashi, Z. Hiroi & M. Takano

  4. Institute for Solid State Physics, University of Tokyo, Roppongi, Minato‐ku, Tokyo, 106, Japan

    H. Takahashi & N. Mori

  5. NTT Basic Research Laboratories, Morinosato, Wakamiya, Atsugi‐shi, Kanagawa, 243‐01, Japan

    K. Kinoshita

Authors
  1. J. Akimitsu
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  2. H. Okajima
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  3. A. Yamashita
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  4. K. Ishii
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  5. T. Yokoo
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  6. T. Nagata
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  7. M. Uehara
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  8. R. Kadono
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  9. K. Nagamine
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  10. N. Kobayashi
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  11. Z. Hiroi
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  12. M. Takano
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  13. H. Takahashi
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  14. N. Mori
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  15. K. Kinoshita
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Akimitsu, J., Okajima, H., Yamashita, A. et al. Appearance of magnetic long range order in the spin ladder compound LaCuO2.5 . Hyperfine Interactions 104, 43–48 (1997). https://doi.org/10.1023/A:1012638701597

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  • DOI: https://doi.org/10.1023/A:1012638701597

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