Inverse flux quantum periodicity in the amplitudes of commensurability oscillations in two-dimensional lateral surface superlattices
| dc.contributor.author | Chowdhury, S. | en |
| dc.contributor.author | Long, A. R. | en |
| dc.contributor.author | Skuras, E. | en |
| dc.contributor.author | Davies, J. H. | en |
| dc.contributor.author | Lister, K. | en |
| dc.contributor.author | Pennelli, G. | en |
| dc.contributor.author | Stanley, C. R. | en |
| dc.date.accessioned | 2015-11-24T17:35:14Z | |
| dc.date.available | 2015-11-24T17:35:14Z | |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/14099 | |
| dc.rights | Default Licence | - |
| dc.subject | dimensional electron-gas | en |
| dc.subject | magnetoresistance oscillations | en |
| dc.subject | energy-spectrum | en |
| dc.subject | magnetotransport | en |
| dc.title | Inverse flux quantum periodicity in the amplitudes of commensurability oscillations in two-dimensional lateral surface superlattices | en |
| heal.abstract | We report strong, amplitude modulated, commensurability oscillations in the magnetoresistance of short period, square, two-dimensional, lateral surface superlattices with symmetric potentials. The amplitude of the oscillations is strongly enhanced when one magnetic-flux quantum (h/e) passes through an integral number of cells of the superlattice. The temperature dependence of the strong oscillations agrees with the theory for commensurability oscillations in one-dimensional superlattices, but the smaller oscillations between these are more rapidly attenuated by increasing temperature. Although the structure we observe has the same flux periodicity as expected for the Landau-level substructure known as the Hofstadter butterfly, such substructure will not be resolved at the temperatures of measurement (1-10 K). We compare our data instead to a recent theoretical model which treats exactly this case, and find significant points of agreement. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | v | - |
| heal.journalName | Physical Review B | en |
| heal.journalType | peer reviewed | - |
| heal.publicationDate | 2004 | - |
| heal.publisher | American Physical Society | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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