Nonlinear delayed symmetry breaking in a solid excited by hard x-ray free electron laser pulses
- Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland)
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
- SwissFEL, Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland)
We have studied the ultrafast changes of electronic states in bulk ZnO upon intense hard x-ray excitation from a free electron laser. By monitoring the transient anisotropy induced in an optical probe beam, we observe a delayed breaking of the initial c-plane symmetry of the crystal that lasts for several picoseconds. Interaction with the intense x-ray pulses modifies the electronic state filling in a manner inconsistent with a simple increase in electronic temperature. These results may indicate a way to use intense ultrashort x-ray pulses to investigate high-energy carrier dynamics and to control certain properties of solid-state materials.
- OSTI ID:
- 22398913
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 15; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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