2002/01/17 by L. Wang, Wang, L., H. S. Lim +3
Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con) #Theoretical and Computational Physics #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0201307
Revtex4, 8 pages, 4 figures, references modified, figures and table embedded
openalex publication_date 2002/01/17 · arxiv created 2003/10/08 · arxiv updated 2009/11/30 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
Novel procedures to determine the upper critical field Bc2 have been proposed within a continuous Ginzburg-Landau model. Unlike conventional methods, where Bc2 is obtained through the determination of the smallest eigenvalue of an appropriate eigen equation, the square of the magnetic field is treated as eigenvalue problems so that the upper critical field can be directly deduced. The calculated Bc2 from the two procedures are consistent with each other and in reasonably good agreement with existing theories and experiments. The profile of the order parameter associated with Bc2 is found to be Gaussian-like, further validating the methodology proposed. The convergences of the two procedures are also studied.