The successful demonstration250 of

The successful demonstration250 of miniband formation in strong magnetic fields naturally leads to the question of whether Bloch oscillations might be observable in such a system. This question would appear to us to have a negative answer. The reason is simple, and it illustrates another interesting difference of magnetically induced band structure. In the quantum Hall effect regime the electric field is perpendicular to the current, so no acceleration of the electrons occurs. Since ˙k = 0, no Bloch oscillations should be expected.