  In this paper, we discuss the potential analysis of the holographic Schwinger
effect in the bottom up AdS/QCD model. We study the effect of the magnetic
field on the critical field and total potential in finite chemical potential
case. By evaluating the critical electric field from the DBI action, one can
observe that magnetic field decreases critical electric field Ec. From the
results of potential analysis, we find the magnetic field reduces the potential
barrier and favor the Schwinger effect which agrees with the results of the
critical electric field. Moreover, the Schwinger effect is more obvious when
pairs are parallel to the magnetic field than that in perpendicular case in
this Einstein-Maxwell-dilaton model.
