Time-spliced X-ray Diffraction Imaging
arXiv:1706.01718 · doi:10.1073/pnas.1716160115
Abstract
Diffraction imaging of non-equilibrium dynamics at atomic resolution is becoming possible with X-ray free-electron lasers. However, there are unresolved problems with applying this method to objects that are confined in only one dimension. Here I show that one-dimensional coherent diffraction imaging is possible by splicing together images recovered from different delays in a time-resolved experiment. This is used to image the time and space evolution of antiferromagnetic order in a complex oxide heterostructure from measurements of a resonant soft X-ray diffraction peak. Mid-infrared excitation of the substrate is shown to lead to a magnetic front that propagates at a velocity exceeding the speed of sound, a critical observation for the understanding of driven phase transitions in complex condensed matter.
References in corpus (10)
- Mott transition in VO2 revealed by infrared spectroscopy and nano-imaging
- Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
- A unified evaluation of iterative projection algorithms for phase retrieval
- Physics of ultrathin films and heterostructures of rare earth nickelates
- Role of magnetic and orbital ordering at the metal-insulator transition in NdNiO3
- Spatially resolved ultrafast magnetic dynamics launched at a complex-oxide hetero-interface
- Magnetophononics: ultrafast spin control through the lattice
- Melting of Charge Stripes in Vibrationally Driven La1.875Ba0.125CuO4: Assessing the Respective Roles of Electronic and Lattice Order in Frustrated Superconductors
- Multiple supersonic phase fronts launched at a complex-oxide hetero-interface
- Recovering magnetization distributions from their noisy diffraction data