摘要
The temperature dependence of the upper (H-c2) and lower (H-c1) critical fields has been deduced from Hall probe magnetization measurements of high quality MgB2 single crystals along the two main crystallographic directions. We show that Gamma(Hc2)=H-c2parallel toab/H-c2parallel toc and Gamma(Hc1)=H-c1parallel toc/H-c1parallel toab differ significantly at low temperature (being similar to5 and similar to1, respectively) and have opposite temperature dependencies. We su
- 出版日期2004-2-6
- 单位中国地震局