Localization of a Gaussian polymer in a weak periodic surface potential disturbed by a single defect

Details Localization of a Gaussian polymer in a weak periodic surface potential disturbed by a single defect Localization of a Gaussian polymer in a weak periodic surface potential disturbed by a single defect

2002-11-21

arxiv.org/abs/cond-mat/0211477v1

Eur. Phys. J. B 28, 209-215 (2002)

Physics

Condensed Matter

Statistical Mechanics

7 pages, 5 figures, revtex4

Scientific paper

10.1140/epjb/e2002-00222-x

Using the results of the recently studied problem of adsorption of a Gaussian polymer in a weak periodic surface potential we study the influence of a single rod like defect on the polymer being localized in the periodic surface potential. We have found that the polymer will be localized at the defect under condition u>u_c, where u_c is the localization threshold in the periodic potential, for any infinitesimal strength of the interaction with defect. We predict that the concentration of monomers of the localized polymer decays exponentially as a function of the distance to the defect and is modulated with the period of the surface potential.

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