High-Pressure Studies on the Superconducting Spin-Ladder Compound Sr14-xCaxCu24O41+δ

H. Takahashi, H. Takahashi, N. Môri, T. Nakanishi, T. Nagata, M. Uehara, Jun Akimitsu, K. Kinoshita, N. Motoyama, H. Eisaki, S. Uchida

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Abstract

Superconductivity has been observed in a spin-ladder compound Ca13.6Sr0.4Cu24O41+δ having Cu2O3 ladder-layer. Electrical resistivity measurements show Tc appears at 7 K at 1.5 GPa and disappears above 6 GPa after having maximum Tc of 12 K at 3 GPa. The bulk superconductivity was confirmed by AC susceptibility measurements. The electrical resistivity measurements for single crystals are also performed. The anisotropy of the electrical resistivity between a-axis and c-axis are reduced under pressure. [superconductivity, spin-ladder material, electrical resistivity, magnetic susceptivility, Hall coefficient].

Original languageEnglish
Pages (from-to)388-393
Number of pages6
JournalReview of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
Volume7
DOIs
Publication statusPublished - 1998
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Takahashi, H., Takahashi, H., Môri, N., Nakanishi, T., Nagata, T., Uehara, M., Akimitsu, J., Kinoshita, K., Motoyama, N., Eisaki, H., & Uchida, S. (1998). High-Pressure Studies on the Superconducting Spin-Ladder Compound Sr14-xCaxCu24O41+δ. Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu, 7, 388-393. https://doi.org/10.4131/jshpreview.7.388