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Title: Disclosing the ultrafast dynamics of competing phases in high - temperature superconductors by time - resolved optical spectroscopy
Authors: Coslovich, Giacomo
Supervisore/Tutore: Parmigiani, Fulvio
Issue Date: 23-Mar-2011
Publisher: Università degli studi di Trieste
Understanding the interplay between the phases present in a high-temperature superconductor (superconducting, pseudogap, strange metal and Fermi-liquid-like) is the key-concept for shining light on the nature of the superconductivity mechanisms in copper-oxide based superconductors.
Here, I set the bases for addressing this physics by developing an approach based on ultrafast time-resolved optical spectroscopy in the infrared and visible spectral regions.
The experiments performed disclose the real-time evolution of the optical properties while the system is suddenly brought out-of-equilibrium by an ultrashort laser pulse. The data obtained show how a competing admixture of two or more phases in a high-temperature superconductor can be created and observed evolving.
Finally by using new models for interpreting the experimental results the ultrafast dynamics of the competing phases start to be revealed.
Ciclo di dottorato: XXIII Ciclo
metadata.dc.subject.classification: SCUOLA DI DOTTORATO DI RICERCA IN FISICA
Keywords: superconductivity
phase transition
optical spectroscopy
competing phases
Language: en
Type: Doctoral Thesis
Settore scientifico-disciplinare: FIS/03 FISICA DELLA MATERIA
NBN: urn:nbn:it:units-8998
Appears in Collections:Scienze fisiche

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