Upper critical field of spin-ladder Sr2Ca12Cu24O41

T. Nakanishi, H. Takahashi, N. Takeshita, N. Môri, N. Motoyama, H. Eisaki, S. Uchida, H. Fujino, T. Nagata, J. Akimitsu

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


We report the upper critical magnetic field, Hc2(T), of the spin-ladder Sr14-xCaxCu24O41 (x = 12) single crystal, which becomes superconducting above approximately 3.0 GPa. From the measurements of the temperature dependence of AC susceptibility at 4.0 GPa in magnetic fields applied along the a-axis (⊥ladder), the b-axis (⊥ladder-plane) and the c-axis (∥ladder), we have determined Hc2(T) for these three directions down to about 1.6 K. A clear difference is observed among these three curves, indicating that this system has an anisotropic superconducting ground state.

Original languageEnglish
Pages (from-to)957-958
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - Jun 1 2000
Externally publishedYes
EventYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn
Duration: Aug 24 1999Aug 28 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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