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Proceedings Paper

Terahertz lightwave control of non-equilibrium phases and collective modes in multi-band superconductors
Author(s): Martin Mootz; Ilias E. Perakis; Chirag Vaswani; Din H. Mudiyanselage; Xu Yang; Jigang Wang
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Paper Abstract

A gauge-invariant density matrix approach is presented to describe the non-equilibrium dynamics of multiband superconductors after photo-excitation. The derived gauge-invariant Bloch equations extend the Anderson pseudo-spin precession model by fully incorporating the center-of-mass motion of Cooper pairs. We also describe lightwave propagation effects inside a superconducting film by including the self-consistent interaction of the photo-excited superconducting system with the propagating electromagnetic field inside the superconductor using Maxwell's equations.

Paper Details

Date Published: 27 February 2020
PDF: 9 pages
Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 112780F (27 February 2020); doi: 10.1117/12.2544430
Show Author Affiliations
Martin Mootz, Univ. of Alabama at Birmingham (United States)
Ilias E. Perakis, Univ. of Alabama at Birmingham (United States)
Chirag Vaswani, Iowa State Univ. (United States)
Din H. Mudiyanselage, Iowa State Univ. (United States)
Xu Yang, Iowa State Univ. (United States)
Jigang Wang, Iowa State Univ. (United States)

Published in SPIE Proceedings Vol. 11278:
Ultrafast Phenomena and Nanophotonics XXIV
Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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