Theory of the spin seebeck effect
Webbför 2 dagar sedan · In non-spin-degenerate TE materials, spin provides a new dimension for the enhancement of the S. (32) There are four main ways of spin caloritronic effects that have been applied to enhance the S: (33) magnon drag, paramagnon drag, spin entropy and spin fluctuation (SF). The spin Seebeck effect (SSE) provides a new dimension toward S … WebbThe Seebeck effect is the electromotive force (emf) that develops across two points of …
Theory of the spin seebeck effect
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Webb2 sep. 2010 · Theory of magnon-driven spin Seebeck effect. The spin Seebeck effect is … WebbAbstract. The spin Seebeck effect (SSE) refers to spin current generation in a magnetic insulator/non-magnetic metal heterostructure due to a thermal gradient and most SSE experiments typically use an electric current as heat source. This study uses Terahertz (THz) time-domain emission spectroscopy where a femtosecond laser induces a …
Webb23 mars 2024 · Device miniaturization and low-energy dissipation are two urgent requirements in future spintronics devices. The narrowest zigzag graphene nanoribbons (ZGNRs), which are composed of just two coupled carbon-atom chains connected with carbon tetragons, are promising candidates that meet both of the above requirements … WebbThe spin Seebeck effect refers to the generation of a spin voltage caused by a …
Webb14 apr. 2024 · We report on spin ratchet currents driven by terahertz radiation electric … Webb26 juni 2024 · The longitudinal spin Seebeck effect (LSSE) consists in the generation of a spin current parallel to a temperature gradient in a magnetic material. The LSSE has only been measured unequivocally in magnetic insulators because in metallic films it is contaminated by the anomalous Nernst effect (ANE). Here we report theoretical and …
Webb14 apr. 2024 · We report on spin ratchet currents driven by terahertz radiation electric fields in a Co/Pt magnetic metamaterial formed by triangle-shaped holes forming an antidot lattice and subjected to an external magnetic field applied perpendicularly to the metal film plane. We show that for a radiation wavelength substantially larger than the period of the …
Webb24 juli 2024 · Here, we reveal the initial steps of this spin Seebeck effect with <27 fs time resolution using terahertz spectroscopy on bilayers of ferrimagnetic yttrium iron garnet and platinum. Upon... citizens of heaven sermonWebbThe spin Seebeck effect refers to the generation of a spin voltage caused by a … dickies fury safety bootsWebbAbstract. The spin Seebeck effect (SSE) refers to spin current generation in a magnetic … citizens of humanity 23Webb9 juli 2013 · Our linear-response approach can explain the sign reversal of the spin … dickies fury safety boots reviewWebb5 apr. 2024 · Here we present a theory for the diffusive magnonic spin current generated in a magnetic insulator layer by a thermal gradient in the spin Seebeck effect. We show that the formulations describing magnonic perturbation using a position-dependent chemical potential and those using a magnon accumulation are completely equivalent. citizens of humanity ambrosioWebb11 jan. 2024 · Our theory shows that singular features in the magnetic-field dependence … dickies funkley shortsWebbSpin Seebeck effect In 2008, physicists discovered the Spin Seebeck effect (SSE). This effect refers to the generation of a spin voltage caused by a temperature gradient in a ferromagnet. This gradient enables the thermal injection of spin currents from the ferromagnet into a nonmagnetic metal. dickies fur lined jacket