Boron Isotope Effect in Superconducting MgB${}_2$

Abstract

We report the preparation method of, and boron isotope effect for MgB${}_2$, a new binary intermetallic superconductor with a remarkably high superconducting transition temperature $T_c$(${}^{10}$B) = 40.2 K. Measurements of both temperature dependent magnetization and specific heat reveal a 1.0 K shift in $T_c$ between Mg${}^{11}$B${}_2$ and Mg${}^{10}$B${}_2$. Whereas such a high transition temperature might imply exotic coupling mechanisms, the boron isotope effect in MgB${}_2$ is consistent with the material being a phonon-mediated BCS superconductor.

One figure and related discussion added

Cited by in corpus (302)

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• Superconducting Properties of Combustion Synthesized MgB2
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