English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A Fibonacci-like terrace structure along a 5fold axis of i-Al(68)Pd(23)Mn(9)monograins has been observed by T.M. Schaub et al. with scanning tunnellingmicroscopy (STM). In the planes of the terraces they see patterns of darkpentagonal holes. These holes are well oriented both within and among terraces.In one of 11 planes Schaub et al. obtain the autocorrelation function of thehole pattern. We interpret these experimental findings in terms of theKatz-Gratias-de Boisseu-Elser model. Following the suggestion of Elser that theBergman clusters are the dominant motive of this model, we decorate the tilingT*(2F) by the Bergman polytopes only. The tiling T*(2F) allows us to use thepowerful tools of the projection techniques. The Bergman polytopes can beeasily replaced by the Mackay polytopes as the decoration objects. We derive apicture of ``geared'' layers of Bergman polytopes from the projectiontechniques as well as from a huge patch. Under the assumption that no surfacereconstruction takes place, this picture explains the Fibonacci-sequence of thestep heights as well as the related structure in the terraces qualitatively andto certain extent even quantitatively. Furthermore, this layer-picture requiresthat the polytopes are cut in order to allow for the observed step heights. Weconclude that Bergman or Mackay clusters have to be considered as geometricbuilding blocks of the i-AlPdMn structure rather than as energetically stableentities

physical review. b, condensed matter

Surface structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>i</mml:mi><mml:mo>−</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Al</mml:mi></mml:mrow><mml:mrow><mml:mn>68</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Pd</mml:mi></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Mn</mml:mi></mml:mrow><…

Surface structure ofi−Al68Pd23Mn<…