Author Topic: strange transmission spectrum and energy levels! why?  (Read 2345 times)

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Offline renren123123

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Recently, I face to a strange problem and after I relaxed the two-probe system, and calculated its transmission and energy level, it shows like:
 -2.00        0.0000
        -1.99        0.0000
        -1.98        0.0000
        -1.97        0.0000
        -1.96        0.0000
        -1.95        0.0000
        -1.94        0.0000
        -1.93        0.0000
        -1.92        0.0000
        -1.91        0.0000
        -1.90        0.0000
        -1.89        0.0000
        -1.88        0.0000
        -1.87        0.0000
        -1.86        0.0000
        -1.85        0.0000
        -1.84        0.0000
        -1.83        0.0000
        -1.82        0.0000
        -1.81        0.0000
        -1.80        0.0000
        -1.79        0.0000
        -1.78        0.0000
        -1.77        0.0000
        -1.76        0.0000
......
          1.91        0.0000
         1.92        0.0000
         1.93        0.0000
         1.94        0.0000
         1.95        0.0000
         1.96        0.0000
         1.97        0.0000
         1.98        0.0000
         1.99        0.0000
         2.00        0.0000
and the energy level:
   # -----------------------------------------------------------------------------
# Energy Spectrum
# -----------------------------------------------------------------------------
# Energy (eV)
     -4396.36
     -4390.27
     -4384.25
     -4376.04
     -4371.64
     -4366.54
     -4365.30
     -4363.47
     -4362.17
     -4361.41
     -4359.66
     -4359.01
     -4358.58
     -4358.01
     -4354.00
     -4349.05
     -4345.41
     -4341.87
     -4340.59
     -4333.43
     -4331.80
     -4324.20
     -4317.41
     -4316.14
     -4303.11
......
   
why? how to solve it?
I checked carefully the configuration and it is correct! 
Thanks!

Offline zh

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Re: strange transmission spectrum and energy levels! why?
« Reply #1 on: August 7, 2009, 02:43 »
Did you check the log file for the self-consistent calculation? Is it well converged? You had better check it first.