Temperature dependence of magnetic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>La</mml:mtext></mml:mrow><mml:mrow><mml:mn>0.7</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Sr</mml:mtext></mml:mrow><mml:mrow><mml:mn>0.3</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>MnO</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mrow><mml:mtext>SrTiO</mml:mtext></mml:mrow>

Belmeguenai, M.; Mercone, Silvana; Adamo, Carolina; Méchin, Laurence; Fur, Cédric; Monod, P.; Moch, P.; Schlom, D. G.

doi:10.1103/physrevb.81.054410

Cited by 41 publications

(30 citation statements)

References 20 publications

(17 reference statements)

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“…For both samples, we observe clear four-fold symmetry, which is as expected based on the epitaxial growth of LSMO on the cubic LSAT(001) substrate. Similar to previous FMR studies of LSMO on SrTiO 3 (001) 57,58 , the magnetic hard axes (corresponding to the axes of higher H FMR ) are along 100 . The inplane Kittel equation for thin films with in-plane cubic magnetic anisotropy is 59 ,…”

Section: In-plane Fmr and Anisotropic Two-magnon Scatteringsupporting

confidence: 70%

Spin transport and dynamics in all-oxide perovskite La2/3Sr1/3MnO3/SrRuO3

et al. 2016

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Thin films of perovskite oxides offer the possibility of combining emerging concepts of strongly correlated electron phenomena and spin current in magnetic devices. However, spin transport and magnetization dynamics in these complex oxide materials are not well understood. Here, we experimentally quantify spin transport parameters and magnetization damping in epitaxial perovskite ferromagnet/paramagnet bilayers of La 2/3 Sr 1/3 MnO3/SrRuO3 (LSMO/SRO) by broadband ferromagnetic resonance spectroscopy. From the SRO thickness dependence of Gilbert damping, we estimate a short spin diffusion length of < ∼ 1 nm in SRO and an interfacial spin-mixing conductance comparable to other ferromagnet/paramagnetic-metal bilayers. Moreover, we find that anisotropic non-Gilbert damping due to two-magnon scattering also increases with the addition of SRO. Our results demonstrate LSMO/SRO as a spin-source/spin-sink system that may be a foundation for examining spin-current transport in various perovskite heterostructures.

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Section: In-plane Fmr and Anisotropic Two-magnon Scatteringsupporting

confidence: 70%

Spin transport and dynamics in all-oxide perovskite La2/3Sr1/3MnO3/SrRuO3

et al. 2016

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“…The absence of the fourfold anisotropy in these LSMO thin films is probably due to the absence of an epitaxial in-plane growth, since that that the epitaxial LSMO thin films usually present four-fold anisotropy due to the cubic structure. 17 Therefore, the MS-FMR measurements have been analysed using a model based on a magnetic energy density considering Zeeman, demagnetizing, perpendicular to the plane and in-plane uniaxial anisotropy terms given by:…”

Section: Resultsmentioning

confidence: 99%

Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer

et al. 2015

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La 0.7 Sr 0.3 MnO 3 (LSMO) and Pt capped La 0.7 Sr 0.3 MnO 3 20 nm thick films have been grown on SrTiO 3 substrates by pulsed laser deposition. Microstrip line ferromagnetic resonance (MS-FMR) technique is then used to investigate their magnetic dynamic properties and to particularly measure the damping constant based on the frequency dependence of microwave absorption linewidth. The results show that the effective damping constant of LSMO(20nm)/Pt(5.5nm) is three times larger than that of LSMO(20nm) and the films present weak in-plane uniaxial anistropy. The enhancement of the magnetic damping constant due to the capping of Pt is the manifestaction of the generation of spin current in Pt layer. Furthermore, the spin current induces an inverse spin Hall effect (ISHE) in LSMO(20nm)/Pt(5.5nm) system, measured using the FMR in cavity with 9.8 GHz excitation frequency. The linear dependence of ISHE on microwave power validates the mechenism of spin pumping in this bilayer system. C 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

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“…[1][2][3][4][5][6][7][8][9][10][11][12]). These materials are important for the emerging fields of magnonics [13], microwave spintronics [14][15][16][17], and for novel sensor applications [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Microwave magnetic dynamics in ferromagnetic metallic nanostructures lacking inversion symmetry

Kostylev

Yang

Maksymov

et al. 2016

Journal of Applied Physics

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In this work we carried out systematic experimental and theoretical investigations of the ferromagnetic resonance (FMR) response of quasi-twodimensional magnetic nano-objects -microscopically long nanostripes made of ferromagnetic metals. We were interested in the impact of the symmetries of this geometry on the FMR response. Three possible scenarios, from which the inversion symmetry break originated were investigated: (1) from the shape of the stripe crosssection, (2) from the double-layer structure of the stripes with exchange coupling between the layers, and (3) from the single-side incidence of the microwave magnetic field on the plane of the nano-pattern. The latter scenario is characteristic of the stripline FMR configuration. It was found that the combined effect of the three symmetry breaks is much stronger than impacts of each of these symmetry breaks separately. I. IntroductionFerromagnetic resonance (FMR) is a powerful tool for studying dynamic properties of metallic ferromagnetic thin films and nanostructures (see e.g., Refs. [1][2][3][4][5][6][7][8][9][10][11][12]). These materials are important for the emerging fields of magnonics [13], microwave spintronics [14][15][16][17], and for novel sensor applications [18][19][20][21].Macroscopically-long stripes with sub-micron cross-section made of ferromagnetic materials have attracted a lot of attention, because this geometry is a very convenient model object for studying the impact of geometric confinement on magnetization dynamics on the sub-micrometre and nanometer scales [22][23][24][25][26][27][28][29][30]. The main reasons for the attractiveness of this geometry are the practical absence of a static demagnetizing field H ds when the external field is applied along the stripes (i.e. along the axis y in Fig. 1(a)) and the quasi-two-dimensional (2D) character of the dynamics.The former property allows clear separation of the static and dynamic demagnetizing effects. Furthermore, because of the absence of H ds , the static magnetization configuration for the stripes is very simple. The static magnetization vector has the same magnitude -equal to the saturation magnetization for the material -and the same direction -along the stripe -for every point on the stripe crosssection. Due to strong shape anisotropy for this geometry, this configuration remains very stable even at remanence [29][30][31]. The simplicity of the magnetization ground state, together with the 2D character of the magnetization dynamics, results in simple analytical and quasi-analytical theoretical models able to deliver a clear physical

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Temperature dependence of magnetic properties ofLa0.7Sr0.3MnO3/SrTiO

Cited by 41 publications

References 20 publications

Spin transport and dynamics in all-oxide perovskite La2/3Sr1/3MnO3/SrRuO3

Spin transport and dynamics in all-oxide perovskite La2/3Sr1/3MnO3/SrRuO3

Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer

Microwave magnetic dynamics in ferromagnetic metallic nanostructures lacking inversion symmetry

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