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Více informací o knize Charge Dynamics in 122 Iron-Based Superconductors

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Nákupem získáte 331 bodů

Anotace knihy

This thesis combines highly accurate optical spectroscopy data on the recently discovered iron-based high-temperature superconductors with an incisive theoretical analysis. Three outstanding results are reported: (1) The superconductivity-induced modification of the far-infrared conductivity of an iron arsenide with minimal chemical disorder is quantitatively described by means of a strong-coupling theory for spin§fluctuation mediated Cooper pairing. The formalism developed in this thesis also describes prior spectroscopic data on more disordered compounds. (2) The same materials exhibit a sharp superconductivity-induced anomaly for photon energies around 2.5 eV, two orders of magnitude larger than the superconducting energy gap. The author provides a qualitative interpretation of this unprecedented observation, which is based on the multiband nature of the superconducting state. (3) The thesis also develops a comprehensive description of a superconducting, yet optically transparent iron chalcogenide compound. The author shows that this highly unusual behavior can be explained as a result of the nanoscopic coexistence of insulating and superconducting phases, and he uses a combination of two complementary experimental methods - scanning near-field optical microscopy and low-energy muon spin rotation - to directly image the phase coexistence and quantitatively determine the phase composition. These data have important implications for the interpretation of data from other experimental probes.

Parametry knihy

Zařazení knihy Knihy v angličtině Technology, engineering, agriculture Electronics & communications engineering Electronics engineering

• Plný název: Charge Dynamics in 122 Iron-Based Superconductors
• Autor: Aliaksei Charnukha
• Jazyk: Angličtina
• Vazba: Pevná
• Počet stran: 130
• EAN: 9783319011912
• ISBN: 331901191X
• ID: 01469129
• Nakladatelství: Springer International Publishing AG
• Hmotnost: 3435 g
• Rozměry: 235 × 155 × 14 mm
• Datum vydání: 13. September 2013

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