Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
2018
Journal or Book Title
arXiv
Abstract
We investigate the interplay between gap oscillations and damping in the dynamics of superconductors taken out of equilibrium by strong optical pulses with sub-gap Terahertz frequencies. A semi-phenomenological formalism is developed to include the damping within the electronic subsystem that arises from effects beyond BCS, such as interactions between Bogoliubov quasiparticles and decay of the Higgs mode. Such processes are conveniently expressed as T1 and T2 times in the standard pseudospin language for superconductors. Comparing with data on NbN that we report here, we argue that the superconducting dynamics in the picosecond time scale, after the pump is turned off, is governed by the T2 process.
Copyright Owner
The Authors
Copyright Date
2018
Language
en
File Format
application/pdf
Recommended Citation
Cui, Tianbai; Yang, Xu; Vaswani, Chirag; Wang, Jigang; Fernandes, Rafael M.; and Orth, Peter, "Impact of damping on superconducting gap oscillations induced by intense Terahertz pulses" (2018). Physics and Astronomy Publications. 483.
https://lib.dr.iastate.edu/physastro_pubs/483
Comments
This is a pre-print of Cui, Tianbai, Xu Yang, Chirag Vaswani, Jigang Wang, Rafael M. Fernandes, and Peter P. Orth. "Impact of damping on superconducting gap oscillations induced by ultra-strong Terahertz pulses." arXiv preprint arXiv:1802.09711 (2018).