Fermi Surface and Quantum Critical Phenomena of by Carsten Matthias Putzke

By Carsten Matthias Putzke

This thesis offers an in depth creation to quantum oscillation dimension and research and gives a connection among Fermi floor houses and superconductivity in high-temperature superconductors. It additionally discusses the sector of iron-based superconductors and checks the types for the looks of nodes within the superconducting hole of a 111-type pnictide utilizing quantum oscillation measurements mixed with band constitution calculation.
The similar measurements have been conducted to figure out the quasiparticle mass in BaFe2(As1-xPx)2, that's strongly greater on the anticipated quantum serious aspect. whereas the reduce superconducting severe box indicates proof of quantum criticality, the higher superconducting serious box isn't motivated by way of the quantum serious element. those findings contradict traditional theories, demonstrating the necessity for a theoretical therapy of quantum severe superconductors, which has now not been addressed to date.
The quest to find related facts within the cuprates demands the appliance of utmost stipulations. As such, quantum oscillation measurements have been played less than excessive strain in a excessive magnetic box, revealing a destructive correlation among quasiparticle mass and superconducting severe temperature.

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