There is a cylinder on the hub that extends thru a hole in the center of the rotor. The rotor can sieze to the hub there as well, as well, corrosion on that cylinder can keep the rotor from sliding off hub. Clean the corrosion off that center cylinder if it extends past the rotor, gets lots of PB Blaster down it, if you haven't already.
Use anti-sieze, but nots tons of it, it will flow out and get all over the brakes. Just a very thin layer, rubbed around on the hub with your finger, wipe off the excess, it will do fine at keeping the two from siezing together.
Chrysler is recommending absolutely nothing inbetween rotors and hubs for their NEW brakes, including anti-sieze, because the run-out specs are less than a human hair, they figure anything inbetween can throw the runout specs out, as well and thing like grease or anti-sieze could capture particles/dirt or even a human hair that could throw out run-out. IMHO thats foolish, most rotors and hubs develop enough rust on the surface that it exceeds the width of a human hair, thats going to throw out run-out as well. I burnish some anti-sieze into the hub and rotor, I rub it in and then wipe it off with a rag, there is the finest layer of residual anti-sieze left over. Just that light residual anti-sieze is more than enough, I've never had a rotor sieze to a hub with just that little bit.