Abstract
Roughness of driven elastic interfaces in random media is typically understood to be characterized by a single roughness exponent ζ. We show that at the depinning threshold, due to symmetry breaking caused by the direction of the driving force, elastic interfaces with local, long-range, and mean-field elasticity exhibit asymmetric roughness. It is manifested as a skewed distribution of the local interface heights, and can be quantified by using detrended fluctuation analysis to compute a spectrum of local, segment-level scaling exponents. The asymmetry is observed as approximately linear dependence of the local scaling exponents on the difference of the segment height from the mean interface height.
Original language | English |
---|---|
Article number | 175701 |
Number of pages | 6 |
Journal | Physical Review Letters |
Volume | 129 |
Issue number | 17 |
DOIs | |
Publication status | Published - 18 Oct 2022 |
Publication type | A1 Journal article-refereed |
Publication forum classification
- Publication forum level 3
ASJC Scopus subject areas
- General Physics and Astronomy