Full text loading...
[(a)–(c)] O 1s, valence band, and C 1s photoemission spectra averaged over the field of view before (light gray) and after (black) annealing in oxygen. (d) XPEEM C 1s map of as-received PZT across a field of view of for (triangles) and (circles) domains.
(a) Images of the PFM-written FE domains for kinetic energy across the MEM-LEEM transition (from left to right: 0.8, 1.45, 1.85, and 2.45 eV). The inner square is , the outer is , and the unwritten PZT film has an imprint FE polarization. Local electron reflectivity curves extracted from the regions of interest in the inset (b) before and (c) after in situ surface annealing in oxygen.
(a) O 2p and Pb partial density of states calculated for a nine layer slab of polarized PTO with the predicted offset. (b) Schematic of slabs showing the possible intrinsic (black + or −) and extrinsic (white + or − on gray adsorbates) screening charge of the fixed polarization charge (white + or − in ferroelectric).
Energy of MEM-LEEM transition as measured from the reflectivity curves of Fig. 2.
Article metrics loading...