Phys. Rev. Lett. 86, 1877 - 1880 (2001)Boron Isotope Effect in Superconducting MgB2
S. L. Bud'ko, G. Lapertot, C. Petrovic, C. E. Cunningham, N. Anderson, and P. C. Canfield
We report the preparation method of and boron isotope effect for MgB2, a new binary intermetallic superconductor with a remarkably high superconducting transition temperature Tc(10B) = 40.2 K. Measurements of both temperature dependent magnetization and specific heat reveal a 1.0 K shift in Tc between Mg11B2 and Mg10B2. Whereas such a high transition temperature might imply exotic coupling mechanisms, the boron isotope effect in MgB2 is consistent with the material being a phonon-mediated BCS superconductor. ©2001 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.86.1877 See AlsoPhysics News Update: Physics News Update, Number 527, Story #1 (2001). [ Abstract | Previous article | Next article | Issue 9 ] |
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