I. D. Lobov

Magnetorefractive effect and giant magnetoresistance in Fe(tx)/Cr superlattices

The magnetorefractive effect in Fe(tx, Å)/Cr(10 Å) samples grown by molecular-beam epitaxy with a variable thickness of the iron layer (superlattices, cluster-layered nanostructures) has been studied in the IR region (λ = 2–13 µm) in s and p polarizations of light. The magnetoresistive effect in a dc magnetic field, H ≤ 32 kOe, has been measured on the same samples. The iron layer thickness required for the magnetorefractive response to appear has been found to be tFe ≥ 3 Å. The correlation between the magnitude of the magnetorefractive effect in the mid-IR region and magnetoresistance has been discussed.

Study of scattering of conduction electrons in Fe/Cr superlattices by IR magnetoreflection method

Spectral investigations of magnetorefractive effect (MRE) have been performed in p-polarized light in the range of wavelengths λ = 2–13 μm using a series of Fe/Cr superlattices with a variable thicknesses of iron and chromium layers grown by the method of molecular-beam epitaxy. The same samples have been used to measure the magnetization and the magnetoresistance. Based on an analysis of the MRE spectra, the parameters of the interfacial spin-dependent scattering of conduction electrons (effective relaxation times τi↑(↓), spin asymmetry coefficient γFe/Cr(100), and scattering probabilities Pi↑(↓)) have been determined in terms of the magnetoreflection theory for multilayer structures with different thicknesses of chromium layers. It has been found that the changes in the parameters of the interfacial scattering of conduction electrons occur with increasing chromium-layer thickness primarily in the (↓)-current channel.

Magnetooptic effects in antiferromagnetic chromium

AbstractTransverse and polar Kerr effects and quadratic magnetooptical effect in reflected light have been discovered and studied in antiferromagnetic chromium. Measurements have been performed in IR, visible, and UV ranges of spectrum in a magnetic field H = 10 kOe. The frequency dispersion of the off-diagonal component of the dielectric constant tensor

Magneto-optical study of the non-collinear magnetic structure of Fe/Cr superlattices

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The Role of Dll4/Notch Signaling in Normal and Pathological Ocular Angiogenesis: Dll4 Controls Blood Vessel Sprouting and Vessel Remodeling in Normal and Pathological Conditions

of chromium has been determined for the first time. An analysis of the magnetooptical data obtained is carried out on the basis of available data on the electronic structure of chromium.

Magnetooptical, optical, and magnetotransport properties of Co/Cu superlattices with ultrathin cobalt layers

The ellipsometry method (with photon energies ħω= 0.1–5.0 eV) has been used to study the optical properties of the CoMnSb phase with a structure of the L21 type. Infrared-absorption features indicating the existence of a pseudogap in the density of states at the Fermi level N(EF) have been revealed. The transverse Kerr effect in CoMnSb and PtMnSb has been measured at photon energies ħω = 0.4–4.5 eV. It has been shown that the observed peaks of magnetooptical activity in CoMnSb are due to the off-diagonal component ɛij of the tensor of the complex dielectric constant

Magnetooptics of Fe/Cr Superlattices

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