| Issue |
Europhys. Lett.
Volume 33, Number 9, March III 1996
|
|
|---|---|---|
| Page(s) | 683 - 688 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00399-6 | |
| Published online | 01 September 2002 | |
Internal structure of a Landau band induced by a lateral superlattice: a glimpse of Hofstadter's butterfly
1
Sektion Physik, LMU München - Geschw. Scholl Platz 1, D-80539
München, Germany
2
Department of Electronics, University of Glasgow - Glasgow G12 8QQ, UK
Received:
14
November
1995
Accepted:
1
February
1996
Short-period square lateral superlattices are fabricated on a two-dimensional electron gas located close to the sample surface. For weak potential modulation, band conductivity dominates the low-field magnetoresistance leading to pronounced commensurability oscillations. For increasing potential modulation, band conductivity breaks down and scattering conductivity dominates indicating our beginning to resolve the internal structure of a Landau band. For strong potential modulation the maxima of the Shubnikov-de Haas oscillations split up into submaxima related to the number of flux quanta penetrating a unit cell.
PACS: 71.25.-s – Nonlocalized single-particle electronic states / 73.20.Dx – Electron states in low-dimensional structures (including quantum wells, superlattices, layer structures, and intercalation compounds) / 73.50.Jt – Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects)
© EDP Sciences, 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.