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Feb3-08, 07:43 AM
No, I don't think we should talk about tunneling, because the same can be said about any QM system described by plane-wave states.
Note that if I put magnetic particles in a tunneling barrier, I can affect the tunneling properties of electrons tunneling through that barrier in the form of an increase in inelastic tunneling (versus the regular ballistic tunneling). Thus, this already tells you that the electrons had to pass through that "in-between locations", or else, why would it matter that I had magnetic particles in the barrier?
How then, if I may ask, is the electron able to ignore the forces that would keep it on its side of the barrier?