Journal Article

PUBDB-2021-04465

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ultrafast multi-cycle terahertz measurements of the electrical conductivity in strongly excited solids

Chen, Z. (Corresponding author)Extern* ; Curry, C.Extern* ; zhang, r.Extern* ; Treffert, F.Extern* ; Stojanovic, N.Extern* ; Toleikis, S.XFEL.EU*DESY* ; Pan, R.DESY* ; Gauthier, M.Extern* ; Zapolnova, E.Extern* ; Seipp, L. E.Extern* ; Weinmann, A.Extern* ; Mo, M.Extern* ; Kim, J.Extern* ; Witte, B. B. L. ; Bajt, S.CFEL*XFEL.EU*DESY* ; Usenko, S.XFEL.EU* ; Soufli, R. ; Pardini, T.Extern*XFEL.EU* ; Hau-Riege, S.Extern* ; Burcklen, C.Extern*XFEL.EU* ; Schein, J. ; Redmer, R.Extern* ; Tsui, Y. Y.Extern* ; Ofori-Okai, B.Extern*XFEL.EU* ; Glenzer, S. (Corresponding author)Extern*

2021
Nature Publishing Group UK [London]

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Please use a persistent id in citations: doi:10.1038/s41467-021-21756-6  doi:10.3204/PUBDB-2021-04465

Abstract: Key insights in materials at extreme temperatures and pressures can be gained by accurate measurements that determine the electrical conductivity. Free-electron laser pulses can ionize and excite matter out of equilibrium on femtosecond time scales, modifying the electronic and ionic structures and enhancing electronic scattering properties. The transient evolution of the conductivity manifests the energy coupling from high temperature electrons to low temperature ions. Here we combine accelerator-based, high-brightness multi-cycle terahertz radiation with a single-shot electro-optic sampling technique to probe the evolution of DC electrical conductivity using terahertz transmission measurements on sub-picosecond time scales with a multi-undulator free electron laser. Our results allow the direct determination of the electron-electron and electron-ion scattering frequencies that are the major contributors of the electrical resistivity.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. FLASH Wissenschaftlicher Nutzerbetrieb (FS-FLASH-O)
3. FLASH Photonen-Strahlführungen und Optiken (FS-FLASH-B)
4. FS-ML (CFEL-XOM)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)
3. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)
4. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)

Experiment(s):

1. FLASH Beamline BL3 (FLASH)
2. FLASH THz Undulator Beamline (FLASH)

Appears in the scientific report 2021

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