Aliaksei Charnukha's Charge Dynamics in 122 Iron-Based Superconductors (Springer PDF

By Aliaksei Charnukha

ISBN-10: 331901191X

ISBN-13: 9783319011912

ISBN-10: 3319377523

ISBN-13: 9783319377520

This thesis combines hugely actual optical spectroscopy information at the lately found iron-based high-temperature superconductors with an incisive theoretical research. 3 remarkable effects are pronounced: (1) The superconductivity-induced amendment of the far-infrared conductivity of an iron arsenide with minimum chemical illness is quantitatively defined through a strong-coupling conception for spin
fluctuation mediated Cooper pairing. The formalism constructed during this thesis additionally describes past spectroscopic info on extra disordered compounds. (2) an analogous fabrics express a pointy superconductivity-induced anomaly for photon energies round 2.5 eV, orders of importance better than the superconducting strength hole. the writer offers a qualitative interpretation of this remarkable statement, that is according to the multiband nature of the superconducting kingdom. (3) The thesis additionally develops a accomplished description of a superconducting, but optically obvious iron chalcogenide compound. the writer exhibits that this hugely strange habit might be defined because of the nanoscopic coexistence of insulating and superconducting levels, and he makes use of a mixture of 2 complementary experimental equipment - scanning near-field optical microscopy and low-energy muon spin rotation - to at once photo the part coexistence and quantitatively verify the part composition. those facts have very important implications for the translation of information from different experimental probes.

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Charge Dynamics in 122 Iron-Based Superconductors (Springer Theses) by Aliaksei Charnukha


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