Are there spin singlets in the normal state of high-Tc cuprates ?
Jeudi 6 avril 2023 14:00
- Duree : 1 heure
Lieu : Inst. Néel, bat. K 1st floor, room Remy Lemaire K223
Orateur : Marc-Henri JULIEN (LNCMI)
Résumé :
One of the main challenges in understanding high-Tc cuprates is that the presence of superconductivity makes it impossible to observe "normal" (i.e. non-superconducting) electronic properties at low temperatures. I will present measurements of the spin susceptibility of YBa2Cu3Oy, which were obtained using strong magnetic fields to suppress Tc down to a few Kelvin. The results reveal that the celebrated pseudogap of the cuprates is a composite phenomenon that involves not only short-ranged antiferromagnetism at high temperatures but also charge-density wave and spin-singlet formation at low temperatures.
Contact : florence.levy-bertrand@neel.cnrs.fr
Discipline évènement : (Physique)
Entité organisatrice : (Institut Néel)
Nature évènement : (Séminaire)
Evènement répétitif : (Quantum Materials Seminar)
Site de l'évènement : Polygone scientifique
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