A global non-analytical fit method for the complex lineshape analysis of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$

Abstract

The implementation of global non-analytical fit is exemplified by its application to the spectral analysis of the complex lineshape of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ at $(\pi ,0)$. It deals with properly a multi-level globality in the fitting parameters and efficiently the non-analytical evaluation of the fitting function, thus exhibiting a potential applicability to a wide range of systematic analysis task.

6 iopart pages, 2 figures, 1 table. submitted to Journal of Physics-Condensed Matter