Jean-Marc Triscone awarded a honorary doctorate
by the Norwegian University of Science and Technology (NTNU)
Read morenext Q-MAC meetings in 2018:
3rd Q-MAC symposium in Venice, May 22-25, 2018.
Next regular meeting in Paris, November 27-28, 2018.
Read morePublication Detail / Abstract
Proposed Parametric Cooling of Bilayer Cuprate Superconductors by Terahertz Excitation
We propose and analyze a scheme for parametrically cooling bilayer cuprates based on the selective driving of a c-axis vibrational mode. The scheme exploits the vibration as a transducer making the Josephson plasma frequencies time dependent. We show how modulation at the difference frequency between the intrabilayer and interbilayer plasmon substantially suppresses interbilayer phase fluctuations, responsible for switching c-axis transport from a superconducting to resistive state. Our calculations indicate that this may provide a viable mechanism for stabilizing nonequilibrium superconductivity even above Tc, provided a finite pair density survives between the bilayers out of equilibrium.
