Roughening Transition of a Restricted Solid-on-Solid Model in the Directed Percolation Universality Class

Details Roughening Transition of a Restricted Solid-on-Solid Model in the Directed Percolation Universality Class Roughening Transition of a Restricted Solid-on-Solid Model in the Directed Percolation Universality Class

1999-03-22

arxiv.org/abs/cond-mat/9903335v2

Phys. Rev E 60, 1329-1336 (1999)

Physics

Condensed Matter

Statistical Mechanics

RevTeX, 10 pages, 4 figures, uses 'epsfig' and 'amssymb'

Scientific paper

10.1103/PhysRevE.60.1329

We carried out a finite-size scaling analysis of the restricted solid-on-solid version of a recently introduced growth model that exhibits a roughening transition accompanied by spontaneous symmetry breaking. The dynamic critical exponent of the model was calculated and found to be consistent with the universality class of the directed percolation process in a symmetry-broken phase with a crossover to Kardar-Parisi-Zhang behavior in a rough phase. The order parameter of the roughening transition together with the string order parameter was calculated, and we found that the flat, gapped phase is disordered with an antiferromagnetic spin-fluid structure of kinks, although strongly dominated by the completely flat configuration without kinks. A possible interesting extension of the model is mentioned.

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