INVESTIGADORES
SANCHEZ Cristian Gabriel
artículos
Título:
Magneto-mechanical interplay in spin-polarized point contacts
Autor/es:
M. STAMENOVA; S. SAHOO; C. G. SÁNCHEZ; T. N. TODOROV; S. SANVITO
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
American Physical Society
Referencias:
Año: 2006 vol. 73 p. 94439 - 94439
ISSN:
0163-1829
Resumen:
We investigate the interplay between magnetic and structural dynamics in ferromagnetic atomic point contacts. In particular, we look at the effect of the atomic relaxation on the energy barrier for magnetic domain wall migration and, reversely, at the effect of the magnetic state on the mechanical forces and structural relaxation. We observe changes of the barrier height due to the atomic relaxation up to 200%, suggesting a very strong coupling between the structural and the magnetic degrees of freedom. The reverse interplay is weak; i.e., the magnetic state has little effect on the structural relaxation at equilibrium or under nonequilibrium, current-carrying conditions. (Este artículo consta de cinco páginas numeradas 094439-1 a 094439-5 pero el sistema de CONICET no permite ingresar esta numeración)