Temperature dependence of the femtosecond optical response in doped high-temperature superconductors

David H. Reitze; Andrew M. Weiner; Shahab Etemad; Arun Inam; Glenn Focht

doi:10.1117/12.147066

17 June 1993 Temperature dependence of the femtosecond optical response in doped high-temperature superconductors

David H. Reitze, Andrew M. Weiner, Shahab Etemad, Arun Inam, Glenn Focht

Proceedings Volume 1861, Ultrafast Pulse Generation and Spectroscopy; (1993) https://doi.org/10.1117/12.147066
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

We present a comprehensive report of time-resolved reflectivity and transmission measurements of the superconducting system Pr_xY_1-xBa₂Cu₃O_7-(delta ). For a fixed photon energy (1.98 eV), varying the Pr content permits optical probing of energy states both above and below the Fermi level where a superconducting gap is expected to occur. We find qualitatively different behavior in the sign, magnitude, and temporal responses as a function of Pr fraction. Our results indicate that a simple two-fluid model interpretation cannot account for the observed response and that the intrinsic band structure of Pr_xY_1-xBa₂Cu₃O_7-(delta ) plays a significant role in the dynamics of these systems.

Citation Download Citation

David H. Reitze, Andrew M. Weiner, Shahab Etemad, Arun Inam, and Glenn Focht "Temperature dependence of the femtosecond optical response in doped high-temperature superconductors", Proc. SPIE 1861, Ultrafast Pulse Generation and Spectroscopy, (17 June 1993); https://doi.org/10.1117/12.147066

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