Nonequilibrium dynamics and coherent control of BCS superconductors driven by ultrashort THz pulses
Papenkort T, Kuhn T, Axt VM
Research article in edited proceedings (conference) | Peer reviewedAbstract
The nonequilibrium dynamics of BCS superconductors after excitation with short THz pulses slightly above the superconducting gap is studied theoretically. Calculated pump-probe spectra show how the gap is influenced by this optical excitation. For ultrashort pump pulses a nonadiabatic regime emerges, in which the BCS order parameter exhibits oscillations. These oscillations do not show up in pump-probe spectra. However they may be made visible by using a coherent control type excitation with two phase-locked pump pulses.
Details about the publication
Page range: 012050null
Status: Published
Release year: 2009 (31/12/2009)
Language in which the publication is written: English
Conference:
Authors from the University of Münster
| Kuhn, Tilmann | |
| Papenkort, Thomas |