Generation of second optical harmonic and magnetooptical Kerr effect in ferromagnet-semiconductor heterostructures CaF2/MnAs/Si(111)

Banshchikov, A. G.; Kimel, A.V.; Павлов, В. В.; Pisarev, R. V.; Sokolov, N. S.; Rasing, T.H.M.

doi:10.1134/1.1131311

Cited by 6 publications

(10 citation statements)

References 24 publications

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“…However this requires aligning an optically flat region of the crystal to coincide and lie normal to a manipulator rotation axis, which in turn must be made to lie in the light scattering plane. Owing to the limited number and precision of mechanical degrees of freedom on a typical cryostat manipulator, this scheme is only applicable to thin films [29][30][31][32][33] or bulk single crystals that have several mm large naturally cleaving 34 or mechanically polished 35 flat areas. Experiments can be simplified by rotating the polarizations of the incident and radiated light while keeping the crystal stationary, 36, 37 although this can restrict the number of accessible tensor components because the scattering plane stays fixed with respect to the crystalline axes.…”

Section: Conventional Nhg-ra System Designmentioning

confidence: 99%

A low temperature nonlinear optical rotational anisotropy spectrometer for the determination of crystallographic and electronic symmetries

Torchinsky

Chu

et al. 2014

Review of Scientific Instruments

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Nonlinear optical generation from a crystalline material can reveal the symmetries of both its lattice structure and underlying ordered electronic phases and can therefore be exploited as a complementary technique to diffraction based scattering probes. Although this technique has been successfully used to study the lattice and magnetic structures of systems such as semiconductor surfaces, multiferroic crystals, magnetic thin films and multilayers, challenging technical requirements have prevented its application to the plethora of complex electronic phases found in strongly correlated electron systems. These requirements include an ability to probe small bulk single crystals at the micron length scale, a need for sensitivity to the entire nonlinear optical susceptibility tensor, oblique light incidence reflection geometry and incident light frequency tunability among others. These measurements are further complicated by the need for extreme sample environments such as ultra low temperatures, high magnetic fields or high pressures. In this review we present a novel experimental construction using a rotating light scattering plane that meets all the aforementioned requirements. We demonstrate the efficacy of our scheme by making symmetry measurements on a micron scale facet of a small bulk single crystal of Sr 2 IrO 4 using optical second and third harmonic generation.

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Section: Conventional Nhg-ra System Designmentioning

confidence: 99%

A low temperature nonlinear optical rotational anisotropy spectrometer for the determination of crystallographic and electronic symmetries

Torchinsky

Chu

et al. 2014

Review of Scientific Instruments

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“…The steady-state magnetic properties of the films were studied by measuring the meridional magnetooptical Kerr effect following the technique described in [9]. We used the radiation of a femtosecond titaniumsapphire laser with photon energy ប ω = 1.45-1.70 eV and of a cw helium-neon laser with ប ω = 1.96 eV.…”

Section: Methodsmentioning

confidence: 99%

Magnetooptical study of granular silicon oxide films with embedded CoNbTa ferromagnetic particles

et al. 2003

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-Granular silicon oxide films with embedded CoNbTa ferromagnetic particles and different relative contents of the metal and dielectric phases were studied using both steady-state and dynamic magnetooptical techniques with subpicosecond time resolution. Measurements were conducted in the spectral interval from 1.45 to 1.70 eV. The concentration dependences of the linear and photoinduced Kerr effects were found to behave similarly. Both relations are nonmonotonic with a maximum lying near the percolation threshold.

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“…The study of static magnetic properties of nanoparticle films was based on a longitudinal MOKE technique described in [6]. A femtosecond Ti:sapphire laser operating in the photon energy range 1.45-1.7 eV and a continuous helium-neon laser (hw= 1.96 eV) have been used as light sources.…”

Section: Resultsmentioning

confidence: 99%

Magneto-Optical Study of Ferromagnetic Nanostructured Materials and Thin Films

2002

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Experimental observations of linear and nonlinear magneto-optical phenomena in magnetically ordered nanostructured materials and thin films are discussed. Films of ferromagnetic nanoparticles of CoNbTa in SiO2 matrix with a various relation of metal and dielectric phases were studied by means of static and dynamic magneto-optical techniques with subpicosecond temporal resolution. The optical second harmonic generation was investigated in ferromagnetic-semiconductor heterostructures MnAs/Si(111). The observed changes in the second-harmonic intensity were odd in magnetisation. Second and third harmonic optical spectra were studied in epitaxial magnetic thin films in the spectral range of 1.7-3.2 eV and 2.4-4.2 eV, respectively. No significant increase of the intensity of the nonlinear spectra was found above the bandgap near 3.2 eV where linear absorption increases by two orders of magnitude.

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Generation of second optical harmonic and magnetooptical Kerr effect in ferromagnet-semiconductor heterostructures CaF2/MnAs/Si(111)

Cited by 6 publications

References 24 publications

A low temperature nonlinear optical rotational anisotropy spectrometer for the determination of crystallographic and electronic symmetries

A low temperature nonlinear optical rotational anisotropy spectrometer for the determination of crystallographic and electronic symmetries

Magnetooptical study of granular silicon oxide films with embedded CoNbTa ferromagnetic particles

Magneto-Optical Study of Ferromagnetic Nanostructured Materials and Thin Films

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