Relaxation Phenomena of Magnetic Excitations in Ferromagnetic Media

Никитов, С. А.

doi:10.1002/9780470141465.ch7

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Fmr Measurements1

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“…Their typical lateral density of about 10 8 cm −2 is connected with the typical misfit between YIG and GGG lattices of 10 −3 (see Refs. 15,27). It is also known that such dislocations strongly influence the magnetic dynamics in YIG.…”

Section: Fmr Measurementsmentioning

confidence: 99%

Chiral charge pumping in graphene deposited on a magnetic insulator

et al. 2017

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We demonstrate experimentally that a sizable chiral charge pumping can be achieved at room temperature in graphene/Yttrium Iron Garnet (YIG) bilayer systems. The effect, which cannot be attributed to the ordinary spin pumping, reveals itself in the creation of a dc electric field/voltage in graphene as a response to the dynamic magnetic excitations (spin waves) in an adjacent out-of-plane magnetized YIG film. We show that the induced voltage changes its sign when the orientation of the static magnetization is reversed, clearly indicating the broken mirror reflection symmetry about the planes normal to the graphene/YIG interface. The strength of effect shows a non-monotonous dependence on the spin-wave frequency, in agreement with the proposed theoretical model.

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Section: Fmr Measurementsmentioning

confidence: 99%