| Home > Publications database > Experimental evidence for a metastable state in FeTe$_{1−x}Se_{x}$ following coherent-phonon excitation > print |
| 001 | 459472 | ||
| 005 | 20250716150740.0 | ||
| 024 | 7 | _ | |a 10.1016/j.elspec.2021.147085 |2 doi |
| 024 | 7 | _ | |a 0368-2048 |2 ISSN |
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| 100 | 1 | _ | |a Yang, L. X. |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Experimental evidence for a metastable state in FeTe$_{1−x}Se_{x}$ following coherent-phonon excitation |
| 260 | _ | _ | |a New York, NY [u.a.] |c 2021 |b Elsevier |
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| 520 | _ | _ | |a Changes of the electronic structure of FeTe$_{1−x}Se_{x}$ (x = 0, 0.3) upon ultrafast excitation with near-infrared laser pulses are investigated using time- and angle-resolved extreme ultraviolet photoemission spectroscopy. At different temperatures and for different doping levels we observe a global oscillation of energy bands near the Fermi energy driven by the coherent excitation of the A$_{1g}$(Te) phonon mode inFeTe$_{1−x}Se_{x}$. Prominently, photo-induced band shifts and a spectral weight reduction persist for at least 300 ps, long after the decay of the photo-excited carriers and the damping of the coherent phonons. We argue that the system escapes from the original equilibrium state and is transiently trapped in a possibly metastable state envisioning a purely optical means of manipulating the electronic structure in an iron-based superconductor. |
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| 700 | 1 | _ | |a Rohde, G. |0 0000-0002-4521-8586 |b 1 |
| 700 | 1 | _ | |a Chen, Y. J. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Shi, W. J. |0 P:(DE-HGF)0 |b 3 |
| 700 | 1 | _ | |a Liu, Z. K. |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Chen, F. |0 P:(DE-HGF)0 |b 5 |
| 700 | 1 | _ | |a Chen, Y. L. |0 P:(DE-HGF)0 |b 6 |
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| 700 | 1 | _ | |a Bauer, Michael |0 P:(DE-H253)PIP1010683 |b 8 |e Corresponding author |
| 773 | _ | _ | |a 10.1016/j.elspec.2021.147085 |g Vol. 250, p. 147085 - |0 PERI:(DE-600)1491139-5 |p 147085 |t Journal of electron spectroscopy and related phenomena |v 250 |y 2021 |x 0368-2048 |
| 856 | 4 | _ | |y Published on 2021-07-30. Available in OpenAccess from 2022-07-30. |u https://bib-pubdb1.desy.de/record/459472/files/1-s2.0-S0368204821000414-main.pdf |
| 856 | 4 | _ | |y Published on 2021-07-30. Available in OpenAccess from 2022-07-30. |x pdfa |u https://bib-pubdb1.desy.de/record/459472/files/1-s2.0-S0368204821000414-main.pdf?subformat=pdfa |
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