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Jul 10 at 16:52 vote accept Gotaquestion
Jul 10 at 5:53 comment added Rokas Veitas Yes, Umklapp processes are scattering processes. Bloch oscillations strictly aren’t the fictitious “jumping back” in the BZ that happens when you hit the edge—they’re the position-space oscillation that happens when the momentum repeatedly wraps around. But you’ve got the idea.
Jul 9 at 17:52 comment added Gotaquestion Thanks, to make sure I understand it correctly, am I correct in saying that an Umklapp process will never occur unless two pseudo-particles interact? If that is the case, then the electric field will produce Bloch oscillations (assuming ideal lattice) when it reaches the BZ boundary unless it interacts with another pseudo-particle , is that right?
Jul 9 at 17:15 history answered Rokas Veitas CC BY-SA 4.0