- #1
hokhani
- 483
- 8
Suppose an electron in a crystal(periodic potential) has the Bloch wave function [itex]\psi (k_0,x)[/itex] at t=0. Applying a constant electric field E(at t=0), the electron would still have Bloch-type wave function at any time t with [itex]k(t)=-(1/\hbar) eEt+k_0[/itex]. Now According to this formula for k(t), one can see that k's are now continuous(wheras we had as many as N different ks in the first brillouin zone before exerting the electric field).
Does electronic band structure change by applying the electric field or not? If yes, How?
Does electronic band structure change by applying the electric field or not? If yes, How?