A Femtosecond Multi-Terahertz View of the Phonon and Quasiparticle Dynamics in Superconducting YBa2Cu3O7-δ

M. Porer; A. Pashkin; M. Beyer; J. Hees; K. W. Kim; C. Bernhard; X. Yao; Y. Dagan; R. Hackl; A. Erb; J. Demsar; J. Demsar; A. Leitenstorfer; R. Huber

doi:10.1364/QELS.2010.QWG5

Conference on Lasers and Electro-Optics 2010
OSA Technical Digest (CD) (Optica Publishing Group, 2010),
paper QWG5
•https://doi.org/10.1364/QELS.2010.QWG5

A Femtosecond Multi-Terahertz View of the Phonon and Quasiparticle Dynamics in Superconducting YBa₂Cu₃O_7-δ

M. Porer, A. Pashkin, M. Beyer, J. Hees, K. W. Kim, C. Bernhard, X. Yao, Y. Dagan, R. Hackl, A. Erb, J. Demsar, A. Leitenstorfer, and R. Huber

Quantum Electronics and Laser Science Conference 2010

San Jose, California United States
16–21 May 2010
ISBN: 978-1-55752-889-6

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Ultrafast Processes in Condensed Matter (QWG)

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M. Porer, A. Pashkin, M. Beyer, J. Hees, K. W. Kim, C. Bernhard, X. Yao, Y. Dagan, R. Hackl, A. Erb, J. Demsar, A. Leitenstorfer, and R. Huber, "A Femtosecond Multi-Terahertz View of the Phonon and Quasiparticle Dynamics in Superconducting YBa2Cu3O7-δ," in Conference on Lasers and Electro-Optics 2010, OSA Technical Digest (CD) (Optica Publishing Group, 2010), paper QWG5.

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Abstract

We probe the mid-infrared conductivity of YBa₂Cu₃O_7-δparallel and perpendicular to the CuO₂ planes after 12-fs optical excitation. Quasiparticle excitations and specific lattice modes are traced simultaneously during the photoinduced non-thermal transition to the normal state. The condensate is completely destroyed within 150 fs, while characteristic phonon resonances undergo a blue-shift on distinctly slower times of up to 0.9 ps. The results indicate selective electron-phonon coupling and strong lattice anharmonicities

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