Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation.

Denny, S J; Clark, S R; Laplace, Y; Cavalleri, A; Jaksch, D

Denny, S J; Clark, S R; Laplace, Y; Cavalleri, A; Jaksch, D.

Afiliación

Denny SJ; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Clark SR; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Laplace Y; Max-Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany.
Cavalleri A; Max-Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany.
Jaksch D; Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.

Phys Rev Lett ; 114(13): 137001, 2015 Apr 03.

Article en En | MEDLINE | ID: mdl-25884134

RESUMEN

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 Tc, provided a finite pair density survives between the bilayers out of equilibrium.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2015 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos

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