Tunable negligible-loss energy transfer between dipolar-coupled magnetic disks by stimulated vortex gyration.

ABSTRACT: A wide variety of coupled harmonic oscillators exist in nature. Coupling between different oscillators allows for the possibility of mutual energy transfer between them and the information-signal propagation. Low-energy input signals and their transport with negligible energy loss are the key technological factors in the design of information-signal processing devices. Here, utilizing the concept of coupled oscillators, we experimentally demonstrated a robust new mechanism for energy transfer between spatially separated dipolar-coupled magnetic disks - stimulated vortex gyration. Direct experimental evidence was obtained by a state-of-the-art experimental time-resolved soft X-ray microscopy probe. The rate of energy transfer from one disk to the other was deduced from the two normal modes'

SUBMITTER: Jung H 

PROVIDER: S-EPMC3216546 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature