| 
TABLE OF CONTENTS
INTRODUCTION &DOS 
prefix | outdir | ngauss | degauss | Emin | Emax | DeltaE | fildos
 Notes Output Important ! 
INTRODUCTION
Purpose of dos.x:
    calculates the Density of States (DOS)
    (separated into up and down components for DSDA)
Structure of the input data:
============================
   &DOS
     ...
   /
IMPORTANT: since v.5 namelist name is &dos and no longer &inputpp
   
 
|  Namelist: DOS | 
|---|
 | | 
| prefix | CHARACTER |  
| Default: | 'pwscf' |  | 
prefix of input file produced by pw.x
(wavefunctions are not needed)
         
 |  
| outdir | CHARACTER |  
| Default: | './' |  | 
directory containing the input file
         
 |  
| ngauss | INTEGER |  
| Default: | 0 |  
| Status: | optional |  | 
Type of gaussian broadening:
    =  0  Simple Gaussian (default)
    =  1  Methfessel-Paxton of order 1
    = -1  Marzari-Vanderbilt "cold smearing"
    =-99  Fermi-Dirac function
         
 |  
| degauss | REAL |  | 
gaussian broadening, Ry (not eV!)          see below
         
 |  
| Emin, Emax | REAL |  
| Default: | band extrema |  | 
min, max energy (eV) for DOS plot. If unspecified, the
lower and/or upper band value, plus/minus 3 times the
value of the gaussian smearing if present, will be used.
         
 |  
| DeltaE | REAL |  | 
energy grid step (eV)
         
 |  
| fildos | CHARACTER |  
| Default: | "prefix".dos |  | 
output file containing DOS(E)
         
 |  | 
 |  
Notes
Output
The total DOS (states/eV plotted vs E in eV) is written to file "fildos"
         
 
Important !
The tetrahedron method is used if
    - the input data file has been produced by pw.x using the option
      occupations='tetrahedra', AND
    - a value for degauss is not given as input to namelist &dos
Gaussian broadening is used in all other cases:
    - if degauss is set to some value in namelist &dos, that value
      (and the optional value for ngauss) is used
    - if degauss is NOT set to any value in namelist &dos, the
      value of degauss and of ngauss are read from the input data
      file (they will be the same used in the pw.x calculations)
    - if degauss is NOT set to any value in namelist &dos, AND
      there is no value of degauss and of ngauss in the input data
      file, degauss=DeltaE (in Ry) and ngauss=0 will be used
         
 |