Compressibility of the (formula presented) superconductor

K. Uehara, M. Takata, J. Akimitsu, K. Prassides, Y. Iwasa, Dam H. Chi, T. Ito, M. Sakata, E. Nishibori, Y. Ohishi, O. Shimomura, T. Muranaka

Research output: Contribution to journalArticlepeer-review


Considerable excitement has been caused recently by the discovery that the binary-boride system with stoichiometry (formula presented) is superconducting at the remarkably high temperature of 39 K [J. Nagamatsu, N. Nakagawa, T. Muranaka, Y. Zenitani, and J. Akimitsu, Nature 410, 63 (2001)]. This potentially opens the way to even higher-(formula presented) values in a new family of superconductors with unexpectedly simple composition and structure. The simplicity in the electronic and crystal structures could allow the understanding of the physics of high-(formula presented) superconductivity without the presence of the multitude of complicated features, associated with the cuprates. Synchrotron x-ray diffraction was used to measure the isothermal compressibility of (formula presented) revealing a stiff tightly packed incompressible solid with only moderate bonding anisotropy between intralayer and interlayer directions. These results, combined with the pressure evolution of the superconducting transition temperature, (formula presented) establish its relation to the B and Mg bonding distances over a broad range of values.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number1
Publication statusPublished - 2001
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Compressibility of the (formula presented) superconductor'. Together they form a unique fingerprint.

Cite this