Scaling of the interface roughness in Fe-Cr superlattices: self-affine versus non-self-affine.
We have analyzed kinetic roughening in Fe-Cr superlattices by energy-filtered transmission electron microscopy. The direct access to individual interfaces provides both static and dynamic roughness exponents. We find an anomalous non-self-affine scaling of the interface roughness with a time dependent local roughness at short length scales. While the deposition conditions affect strongly the long-range dynamics, the anomalous short-range exponent remains unchanged. The different short- and long-range dynamics outline the importance of long-range interactions in kinetic roughening.
Santamaria
J
J
Department of Physics, University of California-San Diego, La Jolla, California 92093-0319, USA.
Gómez
M E
ME
Vicent
J L
JL
Krishnan
K M
KM
Schuller
Ivan K
IK