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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Models of superconductors with correlated defects / Modellering av supraledare med korrelerade defekterBolin, Jakob January 2022 (has links)
The quantum phase transition between groundstates of a system with correlated disorder near absolute zero is studied. The computations are based on Monte Carlo methods and the worm algorithm which is an effective method to simulate basic models like the Ising and XY model by making use of global Monte Carlo moves given by modified random walks. Random quenched disorder modeled as a correlated distribution of two values of the coupling constant gives rise to an additional phase transition with a not before seen intermediate phase. / Kvantfasövergången mellan grundtillstånd av ett system med korrelerad oordning nära nolltemperaturen studeras. Beräkningarna är baserade på Monte Carlo metoder och worm algoritmen som är en effektiv metod för att simulera grundläggande modeller som Ising och XY modellen genom att använda sig av globala Monte Carlo steg som ges av modifierade slumpmässiga vandringar. Slumpmässig infrusen oordning modellerad som en korrelerad fördelning av två värden på kopplingsstyrkan ger upphov till en ny mellanliggande fas.
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Topics in the theory of inhomogeneous media: composite superconductors and dielectricsKim, Kwangmoo 26 June 2007 (has links)
No description available.
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