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- W2974380078 abstract "Abstract We apply the mean-field Hubbard model, non-equilibrium Green’s function (NEGF) theory and the hierarchical equations of motion (HEOM) method to investigate some magnetic phase transitions in the 1D interacting quantum dots arrays (QDA) sandwiched by non-interaction leads. We find that with a weak device-leads coupling, there exists a ferrimagnetic state in the uniform odd-numbered or the staggered-hopping QDA systems. With increasing the coupling strength, temperature or the bias potential, the extra spin-polarized electrons flow out of the QDA, which results in a magnetism-to-nonmagnetism phase transition. With the spin-resolved HEOM method, we also investigate the transient spin dissipation process in these phase transitions. When applying an abrupt large bias potential or a strong device-leads coupling, the spin polarized electrons decay with oscillations from the QDA into electrodes. We believe our results may be helpful in the future quantum computation devices." @default.
- W2974380078 created "2019-09-26" @default.
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- W2974380078 date "2020-03-01" @default.
- W2974380078 modified "2023-09-24" @default.
- W2974380078 title "Steady and dynamic magnetic phase transitions in the open interacting quantum dots arrays" @default.
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- W2974380078 doi "https://doi.org/10.1016/j.jmmm.2019.165867" @default.
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