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- W2281128567 endingPage "057306" @default.
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- W2281128567 abstract "We propose a Rashba three-terminal double-quantum-dot device to generate a spin-polarized current and manipulate the electron spin in each quantum dot by utilizing the temperature gradient instead of the electric bias voltage. This device possesses a nonresonant tunneling channel and two resonant tunneling channels. The Keldysh nonequilibrium Green's function techniques are employed to determinate the spin-polarized current flowing from the electrodes and the spin accumulation in each quantum dot. We find that their signs and magnitudes are well controllable by the gate voltage or the temperature gradient. This result is attributed to the change in the slope of the transmission probability at the Fermi levels in the low-temperature region. Importantly, an obviously pure spin current can be injected into or extracted from one of the three electrodes by properly choosing the temperature gradient and the gate voltages. Therefore, the device can be used as an ideal thermal generator to produce a pure spin current and manipulate the electron spin in the quantum dot." @default.
- W2281128567 created "2016-06-24" @default.
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- W2281128567 date "2013-05-01" @default.
- W2281128567 modified "2023-09-26" @default.
- W2281128567 title "Temperature-controllable spin-polarized current and spin polarization in a Rashba three-terminal double-quantum-dot device" @default.
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- W2281128567 doi "https://doi.org/10.1088/1674-1056/22/5/057306" @default.
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