title: Boron isotope effect in superconducting MgB2.
abstract: We report the preparation method of and boron isotope effect for MgB2, a new binary intermetallic superconductor with a remarkably high superconducting transition temperature T(c)(10B) = 40.2 K. Measurements of both temperature dependent magnetization and specific heat reveal a 1.0 K shift in T(c) 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.
authors: Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA.
authors: S L
authors: SL
authors: Bud'ko
authors: G
authors: G
authors: Lapertot
authors: C
authors: C
authors: Petrovic
authors: C E
authors: CE
authors: Cunningham
authors: N
authors: N
authors: Anderson
authors: P C
authors: PC
authors: Canfield