Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/99219
Title: Avalanches in the athermal 2d Random-Field Ising model: front propagation versus nucleation and growth dynamics
Author: Navas Portella, Víctor
Director: Vives i Santa-Eulàlia, Eduard
Keywords: Matèria condensada
Tesis de màster
Condensed matter
Masters theses
Issue Date: Jun-2015
Abstract: The two-dimensional zero-temperature Random Field Ising Model with local adiabatic relaxation dynamics is studied. When externally driven, this model allows to analyse the properties of an advancing front for different amounts of disorder. By imposing special forced boundary conditions and allowing for systems with rectangular geometry, we favour the existence of a unique interface which is the boundary of a 1d spanning avalanche. We show that the description of an advancing front in terms of a univalued function x(y) lacks of a relevant contribution in the thermodynamic limit: the existence of overhangs and islands which are characteristic of the nucleation and growth dynamics
Note: Màster Oficial en Física Avançada, , Facultat de Física, Universitat de Barcelona, Curs: 2015, Tutor: Eduard Vives i Santa-Eulalia
URI: http://hdl.handle.net/2445/99219
Appears in Collections:Màster Oficial - Física Avançada

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