Temperature dependence of shot noise in double barrier magnetic tunnel junctions

Article

关键词: ROOM-TEMPERATURE;    LARGE MAGNETORESISTANCE;   

DOI  :  10.1103/PhysRevB.97.104412

来源: SCIE

【 摘 要 】

Shot noise reveals spin dependent transport properties in a magnetic tunnel junction. We report measurement of shot noise in CoFeB/MgO/CoFeB/MgO/CoFeB double barrier magnetic tunnel junctions, which shows a strong temperature dependence. The Fano factor used to characterize shot noise increases with decreasing temperature. A sequential tunneling model can be used to account for these results, in which a larger Fano factor results from larger spin relaxation length at lower temperatures.

【 授权许可】

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