TY  - JOUR
AU  - Denny, S. J.
AU  - Clark, S. R.
AU  - Laplace, Y.
AU  - Cavalleri, A.
AU  - Jaksch, D.
TI  - Proposed Parametric Cooling of Bilayer Cuprate Superconductors by Terahertz Excitation
JO  - Physical review letters
VL  - 114
IS  - 13
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - PUBDB-2016-03066
SP  - 137001
PY  - 2015
AB  - 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 a resistive state. Our calculations indicate that this may provide a viable mechanism for stabilizing nonequilibrium superconductivity even above T<sub>c</sub>, provided a finite pair density survives between the bilayers out of equilibrium.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000352073600007
C6  - pmid:25884134
DO  - DOI:10.1103/PhysRevLett.114.137001
UR  - https://bib-pubdb1.desy.de/record/302023
ER  -