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Nonequilibrium dynamics and coherent control of BCS superconductors driven by ultrashort THz pulses

Title data

Papenkort, Thomas ; Kuhn, Tilmann ; Axt, Vollrath M.:
Nonequilibrium dynamics and coherent control of BCS superconductors driven by ultrashort THz pulses.
In: Journal of Physics: Conference Series. Vol. 193 (2009) Issue 1 . - Art.Nr. 012050, 4 Seiten.
ISSN 1742-6596
DOI: https://doi.org/10.1088/1742-6596/193/1/012050

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: coherent control; Terahertz excitation Terahertz control; BCS superconductors; nonadiabatic dynamics; Oscillations of the order parameter; pump-probe; coherent dynamics; laser-driven superconductors
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 30 Oct 2017 10:16
Last Modified: 30 Oct 2017 10:16
URI: https://eref.uni-bayreuth.de/id/eprint/40194