Scaling 2 X-Axis

Hello,

I need to create a plot displays leakage currents over temperature. What I would like is to have leakage current on 1 y-axis and on the first x-axis, have the primary x-axis displayed as q/kT (T is in Kelvins and q and k are constants) and the secondary x-axis displayed in Kelvins.

I've been digging through some google searches and realized I need to plot two data sets, and have the second data set use the secondary y-axis and the secondary x-axis. I reversed the values of the secondary x-axis so that the highest temperature is on the left side and the lowest on the right to line up with the primary x-axis. However, there is still an offset. I'm sure this is because the primary axis is not stepping linearly since the temperature is in the denominator... Does anyone have any suggestions of how to fix this?

I can't post my data, but here is a picture of what plot I have so far.

scale axis.PNG

Thank you so much for this! I got it working