Physics – Condensed Matter – Materials Science
Scientific paper
2007-07-25
Phys. Rev. B 76, 075321 (2007)
Physics
Condensed Matter
Materials Science
7 pages, 1 figure, accepted for publication in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.76.075321
We have studied Bloch electrons in a perfect unidirectional superlattice subject to crossed electric and magnetic fields, where the magnetic field is oriented ``in-plane'', i.e. in parallel to the sample plane. Two orientation of the electric field are considered. It is shown that the magnetic field suppresses the intersubband tunneling of the Zener type, but does not change the frequency of Bloch oscillations, if the electric field is oriented perpendicularly to both the sample plane and the magnetic field. The electric field applied in-plane (but perpendicularly to the magnetic field) yields the step-like electron energy spectrum, corresponding to the magnetic-field-tunable oscillations alternative to the Bloch ones.
Goncharuk Nataliya A.
Grill R.
Orlita Milan
Smrcka Ludvik
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