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Photoinduced excited-state dynamics in Co-doped BaFe2As2 superconducting films

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Abstract

The nonlinear optical dynamics and structural transformation of Co-doped BaFe2As2 superconducting films demonstrate complex behavior within a broad range of temperatures. The angle-resolved light scattering conoscopy reveals the temperature-dependent structural transformation of the optimally doped BaFe2As2. Photoinduced excited states dynamics demonstrate the instantaneous formation of the nonequilibrium state of quasiparticles with its subsequent multi-step thermalization within several picoseconds. These transient processes show noticeable temperature dependence below superconducting transition point Tc, where photoinduced dynamics correlate with the surface morphology.

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Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgments

The work was supported at UPRM by the NSF Award# DMR-1905691. The work at University of Wisconsin–Madison (Thin film synthesis and characterization) was supported by the US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES), under Award# DE-FG02-06ER46327.

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Authors and Affiliations

  1. Department of Physics, University of Puerto Rico, Mayaguez, PR, 00681, USA

    Roman Kolodka, Alexander Bartenev, Armando Rua & Sergiy Lysenko

  2. Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA

    Ki-Tae Eom, Jong-Hoon Kang & Chang-Beom Eom

  3. Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32310, USA

    Eric E. Hellstrom

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  1. Roman Kolodka
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  7. Armando Rua
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Correspondence to Roman Kolodka.

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Kolodka, R., Bartenev, A., Eom, KT. et al. Photoinduced excited-state dynamics in Co-doped BaFe2As2 superconducting films. MRS Advances 8, 161–166 (2023). https://doi.org/10.1557/s43580-023-00513-5

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