I'd like to add some vertical space between the tick labels and the axis in a Pgfplots plot. Is this possible?
Background: I have two subfigures arranged next to each other (horizontally) using the subfig package. Both subfigures contain a Pgfplot. The left plot uses a logarithmic x axis and thus an exponential number format for the ticks. The right plot uses a linear scale x axis and thus ticks like 0, 100, 600, ... As a consequence, the left plot needs a tiny bit more of vertical space and is thus not aligned horizontally with the right plot. My goal is to have the two plots vertically aligned. The following screenshots illustrates the issue.
