Quantized spin excitations in a ferromagnetic microstrip from microwave photovoltage measurements.
Quantized spin excitations in a single ferromagnetic microstrip have been measured using the microwave photovoltage technique. Several kinds of spin wave modes due to different contributions of the dipole-dipole and the exchange interactions are observed. Among them are a series of distinct dipole-exchange spin wave modes, which allow us to determine precisely the subtle spin boundary condition. A comprehensive picture for quantized spin excitations in a ferromagnet with finite size is thereby established. The dispersions of the quantized spin wave modes have two different branches separated by the saturation magnetization.
Gui
Y S
YS
Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2. ysgui@physics.umanitoba.ca
Mecking
N
N
Hu
C-M
CM