Physics
Scientific paper
Jun 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10f3008c&link_type=abstract
New Journal of Physics, Volume 10, Issue 6, pp. 063008 (2008).
Physics
8
Scientific paper
Magnetic moments dilutely dispersed in a metallic host tend to be coupled through the conduction electrons of the metal. This indirect exchange coupling (IEC), known to occur for a variety of magnetic materials embedded in several different metallic structures, is of rather long range, especially for low-dimensional structures like carbon nanotubes. Motivated by recent claims that the indirect coupling between magnetic moments in precessional motion has a much longer range than its static counterpart, we consider here how magnetic atoms adsorbed to the walls of a metallic nanotube respond to a time-dependent perturbation that induces their magnetic moments to precess. By calculating the frequency-dependent spin susceptibility, we are able to identify resonant peaks whose respective widths provide information about the dynamic aspect of the IEC. We show that by departing from a purely static representation to another in which the moments are allowed to precess, we change from what is already considered a long-range interaction to another whose range is far superior. In other words, localized magnetic moments embedded in a metallic structure can feel each other's presence more easily when they are set in precessional motion. We argue that such an effect can have useful applications leading to large-scale spintronics devices.
Costa Antonio T.
Ferreira Marco S.
Muniz R. B.
No associations
LandOfFree
Dynamic interaction between localized magnetic moments in carbon nanotubes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamic interaction between localized magnetic moments in carbon nanotubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic interaction between localized magnetic moments in carbon nanotubes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1580364