Spin current gradient
Webto a thermal gradient, a pure spin current is generated in the form of magnons without the presence and dissipation of a charge current—attractive for reducing energy consumption and central to the emerging field of spin caloritronics. However, the experimental methods for directly quantifying a spin current in WebApr 12, 2024 · To measure the gradient magnetic field, two isotopically enriched 87 Rb vapor cells are used as the two sensors (S a and S b) of the gradiometer. The atomic spins of S a and S b are synchronously oriented along y ^ (polarized to the │5 S 1/2 , F = 2, m F = 2〉 state) by two circularly polarized laser beams ( P 2 a / P 3 a and P 2 b / P 3 b ...
Spin current gradient
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WebJul 19, 2016 · current-induced spin torques in iii-v ferromagnetic semiconductors. ... Our study LuttingerHamiltonian 30 time-independent magnetization smallspatial gradients, zero temperature, short-rangedim- purity potentials (justified largecarrier densities ferromagneticsemiconductors short-rangena- ture exchangeinteraction 22 Wetake spin … WebThe spin Seebeck effect, literally, the spin analogy of the Seebeck effect, converts the imposed temperature gradient to a non-equilibrium spin voltage (current). In 2008, Uchida first observed the spin Seebeck effect (SSE) in the NiFe/Pt bilayer structure where the spin voltage thermally generated in the NiFe film was finally converted to the ...
WebMar 13, 2024 · The effective field gradient generates a nuclear spin current owing to the Stern–Gerlach effect. We quantitatively estimate the magnitude of the field gradient … WebSpin current is only relevant to the spin accumulation contributed by the bulk. ... Conjugate Force for spin current Origin of spin force: gradient of an inhomogeneous Zeeman field spin dependent chemical potential near ferromagnet-metal interface H= H0 − ˆszrˆ· Fs dQ dt
WebApr 14, 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 … WebJan 15, 2014 · We present a theoretical model for the longitudinal spin-Seebeck effect (LSSE) in bilayers made of a ferromagnetic insulator (FMI), such as yttrium iron garnet (YIG), and a normal metal (NM), such as platinum (Pt), that relies on the bulk magnon spin current created by the temperature gradient across the thickness of the FMI.
WebMay 18, 2024 · All-Electrical Multifunctional Spin Logics by Adjusting the Spin Current Density Gradient in a Single Device May 2024 Authors: Runze Li Chinese Academy of …
WebNov 14, 2024 · The spatial distribution of spin induced by thermal gradient in the system having a stripe geometry is examined, and it is found that spin is accumulated at the edges, reflecting the spin Nernst current. ... The unified microscopic theory of current-induced spin orientation, spin-galvanic, and spin-Hall effects for the two-dimensional hopping ... hws 6-7WebNov 1, 2024 · To investigate the response of charge, heat and spin current to external electric field and temperature gradient, we employ the Luttinger's mechanical method which captures all effects arisen from the temperature gradient (statistical quantity) by analogy with the gravitational potential ψ (mechanical quantity) [ 73 ]. hw-s61b 5.0ch all-in-one soundbarWebAug 26, 2024 · Recently, a spinon-mediated spin current that is generated by a temperature gradient along the 1D quantum spin chains via the spin Seebeck effect has been measured 73. We would like to show you a description here but the site won’t allow us. hw s60a testWebNov 3, 2024 · The large variation of the normalized anomalous Nernst coefficient with dN for the W underlayer films indicates that a temperature gradient can cause the spin current generation in the W layer that results in the modification of the off-diagonal component. hws75-24WebAug 13, 2024 · As the spin current is induced by the gradient magnetic field along the direction. Fig. 1(b) is the time sequence to induce and research the spin current. BEC are hold in the dipole trap after force evaporation, the magnetic field gradient is then switched on to induce the spin current. The relative travel positions of spin components hws800aWebApr 14, 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 … hws7804lmaWebto a thermal gradient, a pure spin current is generated in the form of magnons without the presence and dissipation of a charge current—attractive for reducing energy consumption … mash burger cliffside park