| Julia Contreras-Garcia (LCT) ’Constructing new model to predict superconductivity’

Sorbonne-université Campus Pierre et Marie Curie - UFR de chimie tour 32-42, salle 101 Collation à partir de 16h30 - Sorbonne-université Campus Pierre et Marie Curie - UFR de chimie tour 32-42, salle 101 Collation à partir de 16h30 - CONFERENCE LES MARDIS DE LA CHIMIE - Titre CONSTRUCTING NEW MODELS TO PREDICT SUPERCONDUCTIVITY - CONSTRUIRE DE NOUVEAUX MODÈLES POUR PREVOIR LA SUPRACONDUCTIVITÈ Présentée par Julia Contreras-Garcia Affectation Laboratoire de Chimie Théorique Résumé A ro om temperature superconductor is probably the most desired system in solid state phys ics. So far , the greatest advances, cuprates, pnictides and number of others were obtained in a serendipitous way. As there is no clear theory for these superconductors, i t'is difficult to pre dict where progress will be made. In contrast the Bardeen - Cooper - Schrieffer (BCS) theory gives a clear guide for achieving high Tc, and hydrogen seems to be a main clue. Within this approach, the recently reported superconductivity at 190 K in compressed H2S has been arguably the biggest discovery in the field since the superconducting cuprates nearly 30 years ago. However, a microscopic understanding of why this particular material features such a strong coupling is still missing. We have recently shown that the underlying chemical structure and bonding need to be characterized for a good comprehension of the chemical composition - superconductivity relation.
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