[nmag-users] Confined Spin Waves by Nmag
Panagiotopoulos Ioannis
In order to explore spin waves in Permalloy nanoelements, Kanenko etal [arXiv:1202.6464] have used Nmag excited by an oscillating magnetic field and fitted the real and imaginary part of the complex susceptibility to an expression:
Extra Magnetization = Oscillating_Field*[Real* sin(2*Pi* f*t) +Imag* cos(2*Pi*f*t)]
(I guess after the signal is stabilized and all initial extra oscillation has decayed)
Stiles et al [JAP 97(2005)10J901] use the time decay response of the local magnetization to a small perturbation of the magnetic configuration, and
Fourier transform the 'ringdown' of the transverse magnetization .
The first one seems closer to the experimental situation, are both methods valid? Any other suggestions?
Regards
JP
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