Femtosecond phase-transition in hard x-ray excited bismuth.
- Makita M Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland. mikako.makita@xfel.eu.
- Vartiainen I Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Mohacsi I Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Caleman C CFEL, Deutsches Elektronen-Synchrotron DESY, 22607, Hamburg, Germany.
- Diaz A Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Jönsson HO Department of Physics and Astronomy, Uppsala University, SE-751 24, Uppsala, Sweden.
- Juranić P Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Medvedev N Institute of Physics, Czech Academy of Sciences, 182 21, Prague 8, Czech Republic.
- Meents A CFEL, Deutsches Elektronen-Synchrotron DESY, 22607, Hamburg, Germany.
- Mozzanica A Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Opara NL Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Padeste C Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Panneels V Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Saxena V CFEL, Deutsches Elektronen-Synchrotron DESY, 22607, Hamburg, Germany.
- Sikorski M Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA.
- Song S Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA.
- Vera L Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Willmott PR Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Beaud P Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Milne CJ Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- Ziaja-Motyka B CFEL, Deutsches Elektronen-Synchrotron DESY, 22607, Hamburg, Germany.
- David C Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland.
- 2019-01-26
Published in:
- Scientific reports. - 2019
English
The evolution of bismuth crystal structure upon excitation of its A1g phonon has been intensely studied with short pulse optical lasers. Here we present the first-time observation of a hard x-ray induced ultrafast phase transition in a bismuth single crystal at high intensities (~1014 W/cm2). The lattice evolution was followed using a recently demonstrated x-ray single-shot probing setup. The time evolution of the (111) Bragg peak intensity showed strong dependence on the excitation fluence. After exposure to a sufficiently intense x-ray pulse, the peak intensity dropped to zero within 300 fs, i.e. faster than one oscillation period of the A1g mode at room temperature. Our analysis indicates a nonthermal origin of a lattice disordering process, and excludes interpretations based on electron-ion equilibration process, or on thermodynamic heating process leading to plasma formation.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1038/s41598-018-36216-3
- PMID 30679456
- Persistent URL
- https://sonar.ch/global/documents/278502
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