Spin current and second harmonic generation in non-collinear magnetic systems: the hydrodynamic model

Karashtin, E. A.; Фраерман, А. А.

doi:10.1088/1361-648x/aab56d

Cited by 6 publications

(1 citation statement)

References 50 publications

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“…It was predicted recently that a new SHG mechanism appears for the media with chiral distribution of magnetization that is characterized by the polar vector Q [14]. The phenomenological expression for the macroscopic dipole moment induced at the double frequency can be written as:…”

Section: Introductionmentioning

confidence: 99%

Optical second harmonic generation from interfaces between heavy and ferromagnetic metals

Murzina¹,

Lazareva²,

Shalygina³

et al. 2018

Preprint

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Surfaces and interfaces of magnetic nanostructures can reveal rather interesting and unusual properties that differ substantially from those of bulky materials. Here we apply the surfacesensitive method of optical second harmonic generation (SHG) for the studies of magnetization induced effects that appear in the nonlinear reflection from interfaces between ferromagnetic (Co) and heavy metals (Pt, Ta, W, Au, Ag, Cu). We demonstrate the appearance of magnetization induced variation in the p-polarized SHG intensity in the geometry of the longitudinal magnetooptical Kerr effect that is forbidden for homogeneous magnetic structures. This confirms the existence of chiral magnetic states at heavy metal/ferromagnet interfaces that appear due to the surface-induced Dzyaloshinskii-Moriya interaction. The related nonlinear chiroptical effect in the SHG intensity is proportional to the dc flexo-electric polarization that is shown to exist for chiral magnetic states at the considered interfaces.

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Section: Introductionmentioning

confidence: 99%