Pressure dependence of Tc in the MgB2 superconductor as probed by resistivity measurements

E. Saito, T. Taknenobu, T. Ito, Y. Iwasa, Kosmas Prassides, T. Arima

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

High-pressure resistivity experiments were performed on the recently discovered superconductor, MgB2. Tc decreases quasi-linearly with applied pressure to 1.4 GPa at a rate of -2.0(1) K GPa-1, which is somewhat larger than that derived from ac susceptibility measurements. The reduction of Tc is consistent with the BCS picture, in a similar way to the C60-based superconductors. Taking into account the pressure dependence of the unit cell volume, V, the volume coefficient of Tc, d(ln Tc)/dV is significantly large.

Original languageEnglish
JournalJournal of Physics Condensed Matter
Volume13
Issue number12
DOIs
Publication statusPublished - 2001 Mar 26

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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