We study the dynamics of electrons in a semiconductor superlattice under the action of large applied electric F and magnetic fields B (up to 47 T). We show that the coupling of the Bloch and cyclotron oscillations in the tilted B geometry generates a magnetic-field-induced miniband structure and an extended electron motion across many periods of the superlattice. The spatially extended character of the electronic states is analogous to the delocalization of the electron orbit in a semiclassical description of the electron motion and explains our observation of a strong resonant enhancement of the current flow through the superlattice.
%0 Journal Article
%1 FOW07
%A Fowler, Daivid
%A Hardwick, David P. A.
%A Patanè, A.
%A Greenaway, Mark T.
%A Balanov, A. G.
%A Fromhold, T. M.
%A Eaves, L.
%A Henini, M.
%A Kozlova, Nadezda
%A Freudenberger, Jens
%A Mori, N.
%D 2007
%J Phys.~Rev.~B
%K band conduction; hopping semiconductor structure; superlattices
%N 24
%P 245303
%R 10.1103/physrevb.76.245303
%T Magnetic-field-induced miniband conduction in semiconductor superlattices
%V 76
%X We study the dynamics of electrons in a semiconductor superlattice under the action of large applied electric F and magnetic fields B (up to 47 T). We show that the coupling of the Bloch and cyclotron oscillations in the tilted B geometry generates a magnetic-field-induced miniband structure and an extended electron motion across many periods of the superlattice. The spatially extended character of the electronic states is analogous to the delocalization of the electron orbit in a semiclassical description of the electron motion and explains our observation of a strong resonant enhancement of the current flow through the superlattice.
@article{FOW07,
abstract = {We study the dynamics of electrons in a semiconductor superlattice under the action of large applied electric F and magnetic fields B (up to 47 T). We show that the coupling of the Bloch and cyclotron oscillations in the tilted B geometry generates a magnetic-field-induced miniband structure and an extended electron motion across many periods of the superlattice. The spatially extended character of the electronic states is analogous to the delocalization of the electron orbit in a semiclassical description of the electron motion and explains our observation of a strong resonant enhancement of the current flow through the superlattice.},
added-at = {2009-03-03T17:19:04.000+0100},
author = {Fowler, Daivid and Hardwick, David P. A. and Patan\`e, A. and Greenaway, Mark T. and Balanov, A. G. and Fromhold, T. M. and Eaves, L. and Henini, M. and Kozlova, Nadezda and Freudenberger, Jens and Mori, N.},
biburl = {https://www.bibsonomy.org/bibtex/267b4373f8ab33e0fa6a17371f2e20e7d/bronckobuster},
doi = {10.1103/physrevb.76.245303},
eid = {245303},
interhash = {0be70638114beb8e452d530e76b3ddf9},
intrahash = {67b4373f8ab33e0fa6a17371f2e20e7d},
journal = {Phys.~Rev.~B},
keywords = {band conduction; hopping semiconductor structure; superlattices},
number = 24,
numpages = {6},
pages = 245303,
timestamp = {2009-03-03T17:19:59.000+0100},
title = {Magnetic-field-induced miniband conduction in semiconductor superlattices},
volume = 76,
year = 2007
}