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- W2972427097 abstract "Abstract With the help of the nonequilibrium Green's function technique, we theoretically analyze the thermospin property through a typical T-shaped spin valve with spin-flip scattering in the linear regime. The influences of spin-flip coefficient of interdot λ, spin-flip coefficient of intradot η and interdot hopping coefficient t + δ σ Δ t on thermospin property are discussed. As interdot hopping coefficient t is equal to energy level e, the spectrum of G s shows Fano-like effect with e variation. Antiresonance position of G s is almost unchanged and its width becomes narrower with e increasing. Spin thermopower S s is close to the maximum of the peak and charge thermopower S c is equal to zero for t = e . As a result, the pure spin thermopower S s can be obtained, which means that a pure spin current may be produced by a temperature gradient in our system. It is found that spin figure of merit Z T s can reach a considerable value by adjusting key parameters of the system, such as Δt, β, α, ϕ. The typical T-shaped spin valve can be treated as a stable thermospin battery which allows to convert the heat energy to spin voltage, thus produces the pure spin current in the device." @default.
- W2972427097 created "2019-09-19" @default.
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- W2972427097 date "2019-11-01" @default.
- W2972427097 modified "2023-09-23" @default.
- W2972427097 title "Thermospin effects in a T-shaped spin valves with spin-flip scattering" @default.
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- W2972427097 doi "https://doi.org/10.1016/j.physleta.2019.125946" @default.
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