Phase retrieval low energy electron microscopy.
We consider the utility of phase-retrieval methods in low energy electron microscopy (LEEM). Computer simulations are presented, demonstrating recovery of the terraced height profile of atomic steps. This recovery uses phase retrieval to decode a single LEEM image, incorporating the effects of defocus, spherical aberration and chromatic aberration. The ability of the method, to obtain temporal sequences of evolving step profiles from a single LEEM movie, is discussed.
Yu
R P
RP
School of Physics, Monash University, Victoria 3800, Australia. rotha.yu@sci.monash.edu.au
Kennedy
S M
SM
Paganin
D M
DM
Jesson
D E
DE