Direct optical excitation of two and three magnons in a-Fe2O3
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PACS: 75.30.Ds, 78.30.–j, 75.50.EeАнотація
Direct excitation of two and three magnons is observed in midinfrared absorption and Raman scattering spectra of a-Fe2O3 crystals. These polarization characteristics and the spectra themselves are shown to be understood from group-theoretical point of view. The microscopic mechanism of three-magnon excitation is proposed in addition to that of well-known two-magnon excitation process.
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2005-08-03
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Y. Tanabe, Y. Fujimaki, K. Kojima, S. Uchida, S. Onari, T. Matsuo, S. Azuma, and E. Hanamura, Direct optical excitation of two and three magnons in a-Fe2O3, Low Temp. Phys. 31, (2005) [Fiz. Nizk. Temp. 31, 1024-1031, (2005)].
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