5 papers
Break-down of the density-of-states description of scanning tunneling spectroscopy in supported metal clusters
Mario De Menech, Ulf Saalmann, Martin E. Garcia
Low-temperature scanning tunneling spectroscopy allows to probe the electronic properties of clusters at surfaces with unprecedented accuracy. By means of quantum transport theory,…
Turbulent self-organized criticality
Mario De Menech, Attilio L. Stella
In the prototype sandpile model of self-organized criticality time series obtained by decomposing avalanches into waves of toppling show intermittent fluctuations. The q-th moments…
From waves to avalanches: two different mechanisms of sandpile dynamics
Mario De Menech, Attilio L. Stella
Time series resulting from wave decomposition show the existence of different correlation patterns for avalanche dynamics. For the d=2 Bak-Tang-Wiesenfeld model, long range correla…
Multifractal scaling in the Bak-Tang-Wiesenfeld Sandpile and edge events
Claudio Tebaldi, Mario De Menech, Attilio L. Stella
An analysis of moments and spectra shows that, while the distribution of avalanche areas obeys finite size scaling, that of toppling numbers is universally characterized by a full,…
Rare events and breakdown of simple scaling in the Abelian sandpile
M. De Menech, A. L. Stella, C. Tebaldi
Due to intermittency and conservation, the Abelian sandpile in 2D obeys multifractal, rather than finite size scaling. In the thermodynamic limit, a vanishingly small fraction of l…