Publication:
Super-roughening as a disorder-dominated flat phase

Thumbnail Image
Identifiers
URI: https://hdl.handle.net/10016/14954
ISSN: 0295-5075 (print version)
ISSN: 1286-4854 (online version)
DOI: 10.1209/epl/i2004-10021-1
Files
super_EL_2004_ps.pdf (347.25 KB)
Publication date
2004-05-15
Defense date
Authors
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Physics
Impact
Google Scholar
Export
Research Projects
Organizational Units
Journal Issue
Abstract
We study the phenomenon of super-roughening found on surfaces growing on disordered substrates. We consider a one-dimensional version of the problem for which the pure, ordered model exhibits a roughening phase transition. Extensive numerical simulations combined with analytical approximations indicate that super-roughening is a regime of asymptotically flat surfaces with non-trivial, rough short-scale features arising from the competition between surface tension and disorder. Based on this evidence and on previous simulations of the two-dimensional random sine-Gordon model (S´anchez et al., Phys. Rev. E, 62 (2000) 3219), we argue that this scenario is general and explains equally well the hitherto poorly understood two-dimensional case.
Description
Keywords
Bibliographic citation
Europhysics Letters, vol. 66, n. 4, 15 mayo 2004. Pp. 552-558
Collections
DM - GISC - Artículos de Revistas