Figure 1
(a) Laser-pumped hard x-ray diffraction microscopy. The structural phase progression of a VO2 film along in-plane and out-of-plane directions, indicated by the black arrows, is probed by synchrotron-based focused x-ray pulses upon homogenous optical excitation along the in-plane direction. The blue and red regions represent monoclinic (M) and rutile (R) phases respectively. (b) A schematic of the real space arrangement of atoms (only V atoms are shown). The contour highlights the M-R phase boundaries during phase transformation. The a,b,c- axes are labeled in the R coordinates. (c) The reciprocal space map of the diffraction patterns of R and M phases and the corresponding lattice structures.
