- Disclosing the ultrafast dynamics of competing phases in high - temperature superconductors by time - resolved optical spectroscopy
- Coslovich, Giacomo
Subject
- superconductivity
- ultrafast
- time-resolved
- phase transition
- optical spectroscopy
- competing phases
- SCUOLA DI DOTTORATO DI RICERCA IN FISICA
- FIS/03 FISICA DELLA MATERIA
Description
- 2009/2010
- 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.
- XXIII Ciclo
- 1982
Date
- 2011-05-11T08:08:56Z
- 2012-03-23T05:01:19Z
- 2011-03-23
Type
- Doctoral Thesis
Format
- application/pdf
Identifier
urn:nbn:it:units-8998