Nanostructure and velocity of field-driven solid-on-solid interfaces moving under a phonon-assisted dynamic

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dc.contributorVirginia Techen
dc.contributor.authorBuendia, G. M.en
dc.contributor.authorRikvold, P. A.en
dc.contributor.authorKolesik, M.en
dc.contributor.authorPark, K.en
dc.contributor.authorNovotny, M. A.en
dc.contributor.departmentPhysicsen
dc.date.accessed2014-04-23en
dc.date.accessioned2014-05-07T15:37:01Zen
dc.date.available2014-05-07T15:37:01Zen
dc.date.issued2007-07en
dc.description.abstractThe nanoscopic structure and the stationary propagation velocity of (1+1)-dimensional solid-on-solid interfaces in an Ising lattice-gas model, which are driven far from equilibrium by an applied force, such as a magnetic field or a difference in (electro)chemical potential, are studied by an analytic nonlinear-response approximation [P. A. Rikvold and M. Kolesik, J. Stat. Phys. 100, 377 (2000)] together with kinetic Monte Carlo simulations. Here, we consider the case that the system is coupled to a two-dimensional phonon bath. In the resulting dynamic [K. Saito , Phys. Rev. E 61, 2397 (2000); K. Park and M. A. Novotny, Comput. Phys. Commun. 147, 737 (2002)], transitions that conserve the system energy are forbidden, and the effects of the applied force and the interaction energies do not factorize (a so-called hard dynamic). In full agreement with previous general theoretical results, we find that the local interface width changes dramatically with the applied force. However, in contrast with other hard dynamics, this change is nonmonotonic in the driving force. Results are also obtained for the force dependence and anisotropy of the interface velocity, which also show differences in good agreement with the theoretical expectations for the differences between soft and hard dynamics. However, significant differences between theory and simulation are found near two special values of the driving force, where certain transitions allowed by the solid-on-solid model become forbidden by the phonon-assisted dynamic. Our results show that different stochastic interface dynamics that all obey detailed balance and the same conservation laws nevertheless can lead to radically different interface responses to an applied force. Thus, they represent a significant step toward providing a solid physical foundation for kinetic Monte Carlo simulations.en
dc.description.sponsorshipNational Science Foundation DMR-0240078, DMR-0444051en
dc.description.sponsorshipFlorida State University through the Center for Materials Research and Technology and the School of Computational Scienceen
dc.description.sponsorshipNational High Magnetic Field Laboratory, and by the Deanship of Research and Development of Universidad Simón Bolívaren
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBuendia, G. M.; Rikvold, P. A.; Kolesik, M.; Park, K.; Novotny, M. A., "Nanostructure and velocity of field-driven solid-on-solid interfaces moving under a phonon-assisted dynamic," Phys. Rev. B 76, 045422 DOI: http://dx.doi.org/10.1103/PhysRevB.76.045422en
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.76.045422en
dc.identifier.issn1098-0121en
dc.identifier.urihttp://hdl.handle.net/10919/47864en
dc.identifier.urlhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.76.045422en
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectmonte-carlo simulationsen
dc.subjectstochastic dynamicsen
dc.subjectsurface-diffusionen
dc.subjectedenen
dc.subjectclustersen
dc.subjectgrowthen
dc.subjectmodelen
dc.subjectbathen
dc.subjectphysics, condensed matteren
dc.titleNanostructure and velocity of field-driven solid-on-solid interfaces moving under a phonon-assisted dynamicen
dc.title.serialPhysical Review Ben
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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