Dear Siesta users
    I'm trying to apply the "external field" routine to a graphene nano-ribbon. 
In this case the a-axis is the "bulk" one, while b a c axis are quite large in 
order to generate a "chain". 
    The run starts normally, but i found this "error message", and it is still 
running:
=====================================================
outcell: Cell vector modules (Ang)   :    2.494285   19.578139   13.342223
outcell: Cell angles (23,13,12) (deg):     90.0566     89.9882     89.9946
outcell: Cell volume (Ang**3)        :    651.5465

iodm: Reading Density Matrix from files

InitMesh: MESH =    24 x   180 x   120 =      518400
InitMesh: Mesh cutoff (required, used) =   200.000   223.567 Ry
efield: ERROR: Non zero bulk electric field.
efield: Input field (Ry/Bohr/e) =    0.000000    0.007779    0.000000

efield: Orthogonalized field    =    0.000000    0.007779    0.000000
=================================================
    This is a real error? or just a warning? My doubt emerges from the fact 
that the calculation is still running.
Thanks in advance
Ricardo
-------------------------------------------------------------------------
-----   Dr. Ricardo Faccio
 
  Mail: Cryssmat-Lab., Cátedra de Física, DETEMA
  Facultad de Química, Universidad de la República
       Av. Gral. Flores 2124, C.C. 1157
       C.P. 11800, Montevideo, Uruguay.
  E-mail: [EMAIL PROTECTED]
  Phone: 598 2 9241860 Int. 109
             598 2 9290705
  Fax:    598 2 9241906
  Web:  http://cryssmat.fq.edu.uy/ricardo/ricardo.htm

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