6 papers
Stress in ordered systems: Ginzburg-Landau type density field theory
Vidar Skogvoll, Audun Skaugen, Luiza Angheluta
We present a theoretical method for deriving the stress tensor and elastic response of ordered systems within a Ginzburg-Landau type density field theory in the linear regime. This…
Dislocation nucleation in the phase field crystal model
Vidar Skogvoll, Audun Skaugen, Luiza Angheluta +1
We use the phase field crystal model to study nucleation of edge dislocations in two dimensions under an applied stress field. A dislocation dipole nucleates under the applied stre…
Machine learning depinning of dislocation pileups
Mika Sarvilahti, Audun Skaugen, Lasse Laurson
We study a one-dimensional model of a dislocation pileup driven by an external stress and interacting with random quenched disorder, focusing on predictability of the plastic defor…
Classical analogies for the force acting on an impurity in a Bose-Einstein condensate
Jonas Rønning, Audun Skaugen, Emilio Hernández-García +2
We study the hydrodynamic forces acting on a small impurity moving in a two-dimensional Bose-Einstein condensate at non-zero temperature. The condensate is modelled by the damped-G…
Analytical computation of the demagnetizing energy of thin film domain walls
Audun Skaugen, Peyton Murray, Lasse Laurson
Due to its non-local nature, calculating the demagnetizing field remains the biggest challenge in understanding domain structures in ferromagnetic materials. Analytical description…
Mesoscale model of dislocation motion and crystal plasticity
Audun Skaugen, Luiza Angheluta, Jorge Viñals
A consistent, small scale description of plastic motion in a crystalline solid is presented based on a phase field description. By allowing for independent mass motion given by the…