Influence of interface layer insertion on the spin Seebeck effect and the spin Hall magnetoresistance of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Y</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Fe</mml:mi><mml:mn>5</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>
/Pt bilayer systems

Niimura, Takumi; Kurokawa, Yuichiro; Horiike, Shu; Li, Houlin; Hanamoto, Hiroki; Weber, R.; Berger, Andreas; Yuasa, Hiromi

doi:10.1103/physrevb.102.094411

Cited by 12 publications

(11 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specifically, the sequence of sample S1 includes a hydrofluoric acid etched Si (110) substrate, 35 nm of Ag (110), 10 nm of Cr (211), 20 nm of Co 74 Ru 26 (1010), and a 10 nm SiO 2 overcoat, which was deposited to avoid surface oxidation and contaminations of the magnetic CoRu layer [46]. The second sample (S2) consists of a 50 nm thick yttrium iron garnet (YIG) layer deposited on a thermally oxidized Si substrate via radiofrequency magnetron sputtering and post-annealed in atmosphere at 750 • C for 1 h. On top of this layer, a 0.3 nm Ni 80 Fe 20 layer and a 1 nm Pt overcoat have also been sputtered deposited in succession to protect the sample [47]. The third and last sample (S3) is fundamentally the same as sample (S2) but without the Ni 80 Fe 20 layer [47].…”

Section: Samplesmentioning

confidence: 99%

Sensitivity and reproducibility of transverse magneto-optical Kerr effect (T-MOKE) ellipsometry

Valderrama¹,

Quintana²,

Martínez-de-Guerenu³

et al. 2022

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

We report a comprehensive experimental study to analyze the limiting factors and physical mechanisms that determine the achievable performance of Transverse Magneto-Optical Kerr Effect (T-MOKE) ellipsometry. Specifically, we explore different approaches to achieve high sensitivity and reduced acquisition times. The best sensitivity is observed for an incident light polarization with balanced s-p components. We also verify experimentally that the method’s theoretical description is accurately describing data for any s-p combination of the incoming light. Furthermore, two alternative measurement strategies are explored by using different measurement sequences for the polarization sensitive optics, which both achieve a very comparable, high quality of results. Signal-to-noise ratios and systematic deviations are measured and analyzed based on a large number of nominally identical measurement repeats, both for entire signal sequences as well as for individual Fourier components of the magneto-optical signal generated by a sinusoidal magnetic field sequence. Hereby, we observe that while higher order Fourier components have a significantly reduced signal amplitude and correspondingly exhibit reduced signal-to-noise and repeatability performance, signal-to-noise ratios always exceed values of 100 even for the lowest signal Fourier component and the lowest signal sample that we investigated, illustrating the extremely precise nature of T-MOKE ellipsometry.

show abstract

Section: Samplesmentioning

confidence: 99%

Sensitivity and reproducibility of transverse magneto-optical Kerr effect (T-MOKE) ellipsometry

Valderrama¹,

Quintana²,

Martínez-de-Guerenu³

et al. 2022

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…A quantitative disentanglement of these spurious signals is therefore necessary in order to extract the intrinsic LSSE contribution . Other effects such as an electronically/magnetically coupled structural phase transition, phase coexistence, , and surface magnetization ,,− on the SSE have also been reported in various systems but have yet to be understood. It is therefore essential to find a magnetic system within which the effects can be investigated systematically.…”

Section: Introductionmentioning

confidence: 99%

Spin Seebeck Effect in Iron Oxide Thin Films: Effects of Phase Transition, Phase Coexistence, And Surface Magnetism

Chanda

Detellem

Pham

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Understanding impacts of phase transition, phase coexistence, and surface magnetism on the longitudinal spin Seebeck effect (LSSE) in a magnetic system is essential to manipulate the spin to charge current conversion efficiency for spincaloritronic applications. We aim to elucidate these effects by performing a comprehensive study of the temperature dependence of LSSE in biphase iron oxide (BPIO = -Fe2O3 + Fe3O4) thin films grown on Si (100) and Al2O3 (111) substrates. A combination of temperature-dependent anomalous Nernst effect (ANE) and electrical resistivity measurements show that the contribution of ANE from the BPIO layer is negligible compared to the intrinsic LSSE in the Si/BPIO/Pt heterostructure even at room temperature. Below the Verwey transition of the Fe3O4 phase, the total signal across BPIO/Pt is dominated by the LSSE. Noticeable changes in the intrinsic LSSE signal for both Si/BPIO/Pt and Al2O3/BPIO/Pt heterostructures around the Verwey transition of the Fe3O4 phase and the antiferromagnetic (AFM) Morin transition

show abstract

“…In recent years, spin‐momentum‐mediated heat–charge conversion technologies aimed at the development of thin thermoelectric generators and heat flow sensors have been extensively studied. [ 1–29 ] The thermoelectric generation (TEG) based on the spin Seebeck (SSE) effect is a promising technology. [ 1–5,7–13,15–20,22,23,25–29 ] The SSE converts the temperature difference into spin current in a magnetic material.…”

Section: Introductionmentioning

confidence: 99%

“…[ 1–29 ] The thermoelectric generation (TEG) based on the spin Seebeck (SSE) effect is a promising technology. [ 1–5,7–13,15–20,22,23,25–29 ] The SSE converts the temperature difference into spin current in a magnetic material. When a heavy metal (HM) with a large spin–orbit coupling is attached to a magnetic material, the spin current generates an electric current according to the inverse spin Hall effect (ISHE).…”

Section: Introductionmentioning

confidence: 99%

Inkjet‐Printed Flexible Spin Seebeck Thermopile Device for Low‐Cost Spintronics Device Fabrication

Kurokawa,

Yamada,

Yuasa

2023

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

Spin‐momentum‐mediated heat–charge conversion technologies for developing thin thermoelectric generators and heat flow sensors have been extensively studied. The thermoelectric generation (TEG) based on the spin Seebeck (SSE) effect is a promising technology. In this study, a flexible SSE thermopile device is fabricated using inkjet printing with Fe3O4 and Ag nanoparticle (NP) ink. A square Fe3O4 NP and a wire‐shaped Ag NP layer are used as the first and second layers, respectively. These layers are overlaid using inkjet printing twice. To obtain the SSE voltage (VSSE), a thin Pt film is deposited on a printed thermopile device. SSE generators consisting of a Pt thin film/Fe3O4 NP layer are connected through a Ag NP wire to form a thermopile structure. The saturated VSSE of the SSE thermopile device increases with the number of SSE generators. In addition, the SSE‐TEG of an SSE thermopile device is observed using a heat source with a curved surface. In these results, it is indicated that the inkjet‐printing fabrication method holds great potential in both the SSE thermopile devices and the flexible spintronic devices because it is a simple and fast process that does not require lithography.

show abstract

Influence of interface layer insertion on the spin Seebeck effect and the spin Hall magnetoresistance of Y3Fe5O12 /Pt bilayer systems

Cited by 12 publications

References 54 publications

Sensitivity and reproducibility of transverse magneto-optical Kerr effect (T-MOKE) ellipsometry

Sensitivity and reproducibility of transverse magneto-optical Kerr effect (T-MOKE) ellipsometry

Spin Seebeck Effect in Iron Oxide Thin Films: Effects of Phase Transition, Phase Coexistence, And Surface Magnetism

Inkjet‐Printed Flexible Spin Seebeck Thermopile Device for Low‐Cost Spintronics Device Fabrication

Contact Info

Product

Resources

About