Magnon Pumping by a Time-Dependent Transverse Magnetic Field in Ferromagnetic Insulators
Mesoscale and Nanoscale Physics
2015-03-17 v2 Strongly Correlated Electrons
Abstract
The magnon pumping effect in ferromagnetic insulators under an external time-dependent transverse magnetic field is theoretically studied. Generation of a magnon current is discussed by calculating the magnon source term in the spin continuity equation. This term represents the non-conservation of magnons arising from an applied transverse magnetic field. The magnon source term has a resonance structure as a function of the angular frequency of the transverse field, and this fact is useful to enhance the pumping effect.
Keywords
Cite
@article{arxiv.1101.2137,
title = {Magnon Pumping by a Time-Dependent Transverse Magnetic Field in Ferromagnetic Insulators},
author = {Kouki Nakata and Gen Tatara},
journal= {arXiv preprint arXiv:1101.2137},
year = {2015}
}
Comments
5 pages, 3 figures, added references, accepted for publication in J.Phys.Soc.Jpn