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Transient Dynamics of d-wave Superconductors after a Sudden Excitation

Abstract : Motivated by recent ultafast pump probe experiments on high-temperature superconductors, we discuss the transient dynamics of a d-wave BCS model after a quantum quench of the interaction parameter. We find that the existence of gap nodes, with the associated nodal quasiparticles, introduces a dissipation channel which makes the dynamics much faster than in the conventional s-wave model. For every value of the quench parameters, the superconducting gap rapidly converges to a stationary value smaller than the one at equilibrium. Using a sudden approximation for the gap dynamics, we find an analytical expression for the reduction of spectral weight close to the nodes, which is in qualitative agreement with recent experiments.
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Preprints, Working Papers, ...
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Contributor : Emmanuelle De Laborderie Connect in order to contact the contributor
Submitted on : Thursday, November 12, 2015 - 12:10:55 PM
Last modification on : Saturday, December 12, 2020 - 10:52:01 AM

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  • HAL Id : cea-01227936, version 1
  • ARXIV : 1506.01409




Francesco Peronaci, Marco Schirò, Massimo Capone. Transient Dynamics of d-wave Superconductors after a Sudden Excitation. 2015. ⟨cea-01227936⟩



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