Conveners
(T2-7) Superconducting Materials - DCMMP / Matériaux supraconducteurs - DPMCM
- Michel Gingras (University of Waterloo)
Young-June Kim
(U)
17/06/2014, 13:45
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
Understanding magnetism in iron-based superconductors presents a difficult challenge facing researchers in this field. While a local spin model seems to describe a large subset of experimental data, these compounds are distinctly metallic and the itinerancy of electrons must be crucial for magnetism. Recent studies have suggested that both local and itinerant nature could be in play, since...
Fazel Fallah Tafti
(U)
17/06/2014, 14:15
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Oral (Non-Student) / orale (non-étudiant)
We report a sudden reversal in the pressure dependence of Tc in the iron-based superconductor CsFe2As2,
similar to that discovered recently in KFe2As2.
As in KFe2As2, we observe no change in the Hall coefficient at T=0, again ruling out a Lifshitz transition across the critical pressure Pc.
We interpret the Tc reversal in the two materials as a phase transition from one pairing state to...
Dr
Olivier Cyr-Choinière
(Université de Sherbrooke)
17/06/2014, 14:30
Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)
Invited Speaker / Conférencier invité
In 1986, condensed-matter physics was profoundly shaken by the discovery of high-temperature superconductivity in materials known as cuprates. With a transition temperature *Tc* above liquid nitrogen temperature, these materials quickly proved to be promising for technological applications. However, the major motivation for the scientific community has been to understand the fundamental...
