Figure 1 (IMAGE)

Moscow Institute of Physics and Technology

Figure 1

Caption

Schematic representation of spin wave excitation by optical pulses. The laser pump pulse generates magnons by locally disrupting the ordering of spins -- shown as violet arrows -- in bismuth iron garnet (BiIG). A probe pulse is then used to recover information about the excited magnons. GGG denotes gadolinium gallium garnet, which serves as the substrate.

Credit

Alexander Chernov et al./Nano Letters

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