Agenda

Next Quantum Material Seminar/LANEF:

Thursday, April 6th 2023 at 2:00 pm

Marc-Henri Julien (LNCMI)

“ Are there spin singlets in the normal state of high-Tc cuprates?”

To access this seminar:

Institut Néel CNRS, Building K, Room Rémy Lemaire  (K223)

Abstract: 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.

The organizers:

Elsa Lhotel (elsa.lhotel@neel.cnrs.fr)
Florence Levy-Bertrand (florence.levy-bertrand@neel.cnrs.fr)