Three-Dimensional Shapes of Spinning Helium Nanodroplets.
- Langbehn B Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany.
- Sander K Institut für Physik, Universität Rostock, 18051 Rostock, Germany.
- Ovcharenko Y Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany.
- Peltz C Institut für Physik, Universität Rostock, 18051 Rostock, Germany.
- Clark A Laboratory of Molecular Nanodynamics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
- Coreno M ISM-CNR, Istituto di Struttura della Materia, LD2 Unit, 34149 Trieste, Italy.
- Cucini R Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.
- Drabbels M Laboratory of Molecular Nanodynamics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
- Finetti P Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.
- Di Fraia M ISM-CNR, Istituto di Struttura della Materia, LD2 Unit, 34149 Trieste, Italy.
- Giannessi L Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.
- Grazioli C ISM-CNR, Istituto di Struttura della Materia, LD2 Unit, 34149 Trieste, Italy.
- Iablonskyi D Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
- LaForge AC Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany.
- Nishiyama T Division of Physics and Astronomy, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
- Oliver Álvarez de Lara V Laboratory of Molecular Nanodynamics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
- Piseri P CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, 20133 Milano, Italy.
- Plekan O Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.
- Ueda K Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
- Zimmermann J Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany.
- Prince KC Elettra-Sincrotrone Trieste S.C.p.A., 34149 Trieste, Italy.
- Stienkemeier F Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany.
- Callegari C ISM-CNR, Istituto di Struttura della Materia, LD2 Unit, 34149 Trieste, Italy.
- Fennel T Institut für Physik, Universität Rostock, 18051 Rostock, Germany.
- Rupp D Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany.
- Möller T Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany.
- 2019-01-05
Published in:
- Physical review letters. - 2018
English
A significant fraction of superfluid helium nanodroplets produced in a free-jet expansion has been observed to gain high angular momentum resulting in large centrifugal deformation. We measured single-shot diffraction patterns of individual rotating helium nanodroplets up to large scattering angles using intense extreme ultraviolet light pulses from the FERMI free-electron laser. Distinct asymmetric features in the wide-angle diffraction patterns enable the unique and systematic identification of the three-dimensional droplet shapes. The analysis of a large data set allows us to follow the evolution from axisymmetric oblate to triaxial prolate and two-lobed droplets. We find that the shapes of spinning superfluid helium droplets exhibit the same stages as classical rotating droplets while the previously reported metastable, oblate shapes of quantum droplets are not observed. Our three-dimensional analysis represents a valuable landmark for clarifying the interrelation between morphology and superfluidity on the nanometer scale.
- Language
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- English
- Open access status
- hybrid
- Identifiers
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- DOI 10.1103/PhysRevLett.121.255301
- PMID 30608832
- Persistent URL
- https://folia.unifr.ch/global/documents/97302
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