Transient Dynamics of d-Wave Superconductors after a Sudden Excitation
- Datum: 03.05.2016
- Uhrzeit: 16:00 - 17:00
- Vortragende(r): Francesco Peronaci
- International School for Advanced Studies (SISSA), Trieste, Italy
- Ort: CFEL (Bldg. 99)
- Raum: Seminar Room IV, O1.111
- Gastgeber: Martin Eckstein
It is found that the existence of gap nodes, with the associated nodal quasiparticles, introduces a decay channel which makes the dynamics much faster than in the conventional s-wave model. For every value of the quench parameter, the superconducting gap rapidly converges to a stationary value smaller than the one at equilibrium. Using a sudden approximation for the gap dynamics, one finds an analytical expression for the reduction of spectral weight close to the nodes, in qualitative agreement with the experimental results.
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