中国物理B ›› 2007, Vol. 16 ›› Issue (3): 826-833.doi: 10.1088/1009-1963/16/3/045
刘敏霞, 甘子钊
Liu Min-Xia(刘敏霞) and Gan Zi-Zhao(甘子钊)†
摘要: The upper critical field of clean MgB2 is investigated using the two-band layered Ginzburg--Landau (GL) theory. The calculated results are fitted to the experimental data of clean MgB2 crystal very well in a broad temperature range. Based on the GL theory for clean superconductors, a phenomenological theory for dirty superconductor is proposed. Selecting appropriate parameters, two-band layered GL theory is successfully applied to the crystal of Mg(B1-xCx)2 and the neutron irradiation samples of MgB2.
中图分类号: (Mixed states, critical fields, and surface sheaths)