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Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation


Reference:

Denny, S. J., Clark, S. R., Laplace, Y., Cavalleri, A. and Jaksch, D., 2015. Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation. Physical Review Letters, 114 (13), 137001.

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    Official URL:

    http://dx.doi.org/10.1103/PhysRevLett.114.137001

    Abstract

    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.

    Details

    Item Type Articles
    CreatorsDenny, S. J., Clark, S. R., Laplace, Y., Cavalleri, A. and Jaksch, D.
    DOI10.1103/PhysRevLett.114.137001
    Uncontrolled Keywordscond-mat.supr-con,quant-ph
    DepartmentsFaculty of Science > Physics
    RefereedYes
    StatusPublished
    ID Code47330
    Additional Information4 pages + 7 page supplemental

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