Boron isotope effect in superconducting MgB2

被引：890

作者：

Bud'ko, SL

Lapertot, G ^{[1
]}

Petrovic, C

Cunningham, CE

Anderson, N

Canfield, PC

机构：

[1] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.86.1877

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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(B-10) = 40.2 K. Measurements of both temperature dependent magnetization and specific heat reveal a 1.0 K shift in T-c between (MgB2)-B-11 and (MgB2)-B-10. 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.

引用

页码：1877 / 1880

页数：4

共 16 条

[11]

KORTUS J, CONDMAT0101446

[12] BORON ISOTOPE EFFECT IN NI AND PD BASED BOROCARBIDE SUPERCONDUCTORS [J].