Femtosecond phase-transition in hard x-ray excited bismuthPaul Scherrer Inst, CH-5232 Villigen, Switzerland..
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics. Department of Physics and Astronomy, Uppsala University, SE-751 24, Uppsala, Sweden.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Czech Acad Sci, Inst Phys, Prague 18221 8, Czech Republic.;Czech Acad Sci, Inst Plasma Phys, Prague 18200 8, Czech Republic..
Deutsch Elektronen Synchrotron DESY, CFEL, D-22667 Hamburg, Germany..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.;Univ Basel, C CINA Biozentrum, CH-4058 Basel, Switzerland..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Deutsch Elektronen Synchrotron DESY, CFEL, D-22667 Hamburg, Germany.;Bhat, Inst Plasma Res, Gandhinagar 382428, India..
SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Deutsch Elektronen Synchrotron DESY, CFEL, D-22667 Hamburg, Germany.;Polish Acad Sci, Inst Nucl Phys, PL-31342 Krakow, Poland..
Paul Scherrer Inst, CH-5232 Villigen, Switzerland..
Show others and affiliations
2019 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 9, article id 602Article in journal (Refereed) Published
Abstract [en]
The evolution of bismuth crystal structure upon excitation of its A(1g) 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 (similar to 10(14) W/cm(2)). 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 A(1g) 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.
Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2019. Vol. 9, article id 602
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-243946DOI: 10.1038/s41598-018-36216-3ISI: 000456554600041PubMedID: 30679456Scopus ID: 2-s2.0-85060536626OAI: oai:DiVA.org:kth-243946DiVA, id: diva2:1293910
Note
QC 20190305
2019-03-052019-03-052022-09-15Bibliographically approved