Publications in Scientific Journals:
I. Turek, S. Blügel, G. Bihlmayer, P. Weinberger:
"Exchange interactions at surfaces of Fe, Co, and Gd ";
Czechoslovak Journal of Physics,
Magnetic exchange interactions at low-index surfaces of bcc iron, hcp cobalt, and
hcp gadolinium are studied using ab initio electronic structure calculations. Interlayer
exchange couplings derived from total-energydi .erences are enhanced at the surfaces over
their bulk counterparts. This trend is in contrast to a surface reduction of on-site exchange
parameters formulated within a classical Heisenberg model. A particular attention is paid
to the sensitivityof exchange interactions at a Gd(0001) surface to relaxation of interlayer
distances. The calculated results do not provide support for recentlyo bserved surface
enhancement of the Curie temperature of the Gd metal.
Key words: surface magnetism, exchange interactions, Curie temperature
Online library catalogue of the TU Vienna:
Electronic version of the publication:
Created from the Publication Database of the Vienna University of Technology.