Drude-Lorentz Fit

The Drude-Lorentz fit program was developed by Hame Sehmi, Wolfgang Langbein and Egor Muljarov to fit material permittivity with a generalized Drude-Lorentz model (also known as critical point model)..

The details of the implemented algorithms are described in the papers

• Optimizing the Drude-Lorentz model for material permittivity { method, program, and examples for gold, silver, and copper
  H. S. Sehmi, W. Langbein, and E. A. Muljarov, arXiv 1612.06925 , Phys. Rev B 95, 115444 (2017) DOI 10.1103/PhysRevB.95.115444

The program was used in the following papers

• xxxx
  

Please acknowledge the usage of the Drude-Lorentz Fit software and cite our related publications.

Installing & Running the Drude-Lorentz Fit software

• Download the version of the Drude-Lorentz Fit you want to use from the below list (the latest version is recommended).
  
• Extract all the files in a folder.
  
• The software is written in MATLAB, compiled for Windows 7 64bit, and requires a MATLAB run-time compiler to be installed. The specific compiler version is given in the list below. 
• To run the software, launch the batch file “run_DrudeLorentzFit.bat”. This will open a cmd window which can show any MATLAB error occurred during the analysis. Please use this feature to identify and report bugs.
  
• Examples of fits are available, see links below in the different versions. The data for gold, silver and copper is provided in the files JCDataAu.dat, JCDataAg.dat, JCDataCu.dat,
  

Versions

• 29/03/2017
• Version 1.1 released DrudeLorentzFit_1p1.zip
• Matlab compiler version R2016a
• Usage instructions
• Changes:
• Option to remove Drude Poles
• Added repulsion Parameters
• Bugfixes
  
• 20/12/2016
  
• Version 1.0 released DrudeLorentzFit_1p0.zip
• Matlab compiler version R2016a
• Usage instructions
• Known issues
• Can return positive imaginary parts of pole positions, and negative real parts.
  
• L=1 data file nearly empty
• Plotting of L=1 graphs not always working