Raman Scattering from Localized Magnons in Ni2+ and Fe2+ Doped MnF2
Division of Engineering and Applied Physics, Harvard University Cambridge, Massachusetts We have studied Raman scattering at low temperatures from MnF2 doped with Ni2+ and Fe2+. Three temperature and polarization dependent lines have been observed for each impurity. For each dopant we have identified one line as a two magnon excitation of the impurity and some linear combination of the host spins. When corrections are made for magnon-magnon interactions, the predicted energy is in excellent agreement with the experimental results.
KeywordsSpin Wave Dope Crystal Impurity Site Brillouin Zone Boundary Spin Deviation
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