J N Churchill and F E Holmstrom 1994 Phys. Scr. 50 305 doi:10.1088/0031-8949/50/3/016
J N Churchill1 and F E Holmstrom2
Show affiliationsEnergy eigenstates are superimposed, using the Stark ladder energy spectrum, to construct exact, closed-form wave packets for an electron in a uniform dc electric field and a virtual lattice. We find that (1) perfectly periodic temporal variation at the Bloch frequency does not necessarily imply that there is a spatial oscillation and (2) perfectly periodic variation in both spatial and temporal behavior at the Bloch frequency does not imply that the motion is related in any way to the equation, dk/dt = −eE/h.
Issue 3 (1994)
Received 16 November 1993
J N Churchill and F E Holmstrom 1994 Phys. Scr. 50 305
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