Figure 6
From: In Situ Atom Scale Visualization of Domain Wall Dynamics in VO2 Insulator-Metal Phase Transition
Microscopic mechanism of domain wall dynamics.
(a), Schematic energy diagram of domain wall motion. (b), The energy-band diagram of a Schottky junction at monoclinic/rutile domain walls. (c), The thermionic emission electron current density JR→M as a function of temperature with a Schottky barrier of 0.11 eV. (d), An illustration of V-V pair movement in first step. (e), Expansion diagram along cM axis in second step. The red and gray spheres represent O and V atoms, respectively.
