To simplify the picture, I would start with an n-type Schottky diode. It has two junctions: one rectifying and one non-rectifying (ohmic contact).
When the diode is forward biased, it conducts current, but it has a small voltage drop, say, 0.3V. Most, if not all, textbooks will tell you that this voltage drops on the rectifying junction.
To me, it seems more likely that the forward voltage drops on the ohmic contact. Has anyone personally measured the voltage drop on the rectifying junction? If not, can anyone suggest how it can be done (if it can be done)?
The same question is applicable to p-n junction diodes.