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1	Topics in the Physics of Inhomogeneous Materials Barabash, Sergey V. 30 July 2003 (has links) No description available. Physics, Condensed Matter MgB2 inhomogeneous spectral theory phase separation superfluid density effective properties polycrystal dielectric constant
2	Quantum Critical Behavior in Deeply Underdoped Cuprate Films and Pairing Symmetry in Iron Pnictide Superconductors Probed by Penetration Depth Measurements Yong, Jie 22 June 2012 (has links) No description available. Physics superfluid density penetration depth superconductivity strongly underdoped cuprate films iron-based superconducting films pairing symmetry quantum critical scaling thermal phase fluctuations
3	Models of superconductors with correlated defects / Modellering av supraledare med korrelerade defekter Bolin, 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. Quantum phase transition correlated disorder 3D XY model Monte Carlo simulation worm algorithm winding number superfluid density Kvantfasövergång korrelerad oordning 3D XY modell Monte Carlo simulering worm algoritmen vindlingstal supraledande täthet Physical Sciences Fysik

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