S. Pal, C. Tzschaschel, A. Bortis, T. Satoh, M. Fiebig
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Two-dimensional THz Spectroscopy of Exchange Interactions in Rare-earth Doped Garnets
We study the correlation dynamics of the complex exchange interaction between the rare-earth and the transition metal in a garnet using two-dimensional terahertz spectroscopy. The THz resonance resembles a convolution of the exchange mode with electron transfer between the Kramer’s doublet.