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Proceedings Paper

Excitation of coherent oscillations in underdoped cuprate superconductors by intense THz pulses
Author(s): Matthias C. Hoffmann; Wei-Sheng Lee; Georgi L. Dakovski; Joshua J. Turner; Simon M. Gerber; Doug Bonn; Walter Hardy; Ruixing Liang; Marco Salluzzo
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Paper Abstract

We use intense broadband THz pulses to excite the cuprate superconductors YBCO and NBCO in their underdoped phase, where superconducting and charge density wave ground states compete. We observe pronounced coherent oscillations at attributed to renormalized low-energy phonon modes. These oscillation features are much more prominent than those observed in all-optical pump-probe measurements, suggesting a different excitation mechanism.

Paper Details

Date Published: 13 May 2016
PDF: 8 pages
Proc. SPIE 9835, Ultrafast Bandgap Photonics, 98351M (13 May 2016); doi: 10.1117/12.2224993
Show Author Affiliations
Matthias C. Hoffmann, SLAC National Accelerator Lab. (United States)
Wei-Sheng Lee, SLAC National Accelerator Lab. (United States)
Georgi L. Dakovski, SLAC National Accelerator Lab. (United States)
Joshua J. Turner, SLAC National Accelerator Lab. (United States)
Simon M. Gerber, Paul Scherrer Institut (Switzerland)
Doug Bonn, The Univ. of British Columbia (Canada)
Walter Hardy, The Univ. of British Columbia (Canada)
Ruixing Liang, The Univ. of British Columbia (Canada)
Marco Salluzzo, Univ. di Napoli “Federico II” Piazzale Tecchio, CNR (Italy)

Published in SPIE Proceedings Vol. 9835:
Ultrafast Bandgap Photonics
Michael K. Rafailov; Eric Mazur, Editor(s)

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