Tunneling spectroscopy and magnetization measurements of the superconducting properties of MgB2 -: art. no. 220508

被引：99

作者：

Sharoni, A ^{[1
]}

Felner, I ^{[1
]}

Millo, O ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.63.220508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cryogenic scanning tunneling microscopy and magnetization measurements were used to study the superconducting properties of MgB2. The magnetization measurements show a sharp superconductor transition at T-c=39 K, in agreement with previous works. The tunneling spectra exhibit BCS-like gap structures, with gap parameters in the range of 5 to 7 meV, yielding a ratio of 2 Delta /k(B)T(c)similar to3-4. This suggests that MgB2 is a conventional BCS s-wave superconductor, either in the weak-coupling or in the "intermediate-coupling' regime.

引用

页数：4

共 24 条

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