Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation
| Autor: | Denny, S. J., Clark, S. R., Laplace, Y., Cavalleri, A., Jaksch, D. |
|---|---|
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 114, 137001 (2015) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.114.137001 |
| Popis: | 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 intra- 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 non-equilibrium superconductivity even above $T_c$, provided a finite pair density survives between the bilayers out of equilibrium. Comment: 4 pages + 7 page supplemental |
| Databáze: | arXiv |
| Externí odkaz: |
|