Magneto-Seebeck effect in magnetic tunnel junctions with perpendicular anisotropy

Autor: Keyu Ning, Houfang Liu, Zhenyi Ju, Chi Fang, Caihua Wan, Jinglei Cheng, Xiao Liu, Linsen Li, Jiafeng Feng, Hongxiang Wei, Xiufeng Han, Yi Yang, Tian-Ling Ren
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: AIP Advances, Vol 7, Iss 1, Pp 015035-015035-5 (2017)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/1.4974972
Popis: As one invigorated filed of spin caloritronics combining with spin, charge and heat current, the magneto-Seebeck effect has been experimentally and theoretically studied in spin tunneling thin films and nanostructures. Here we analyze the tunnel magneto-Seebeck effect in magnetic tunnel junctions with perpendicular anisotropy (p-MTJs) under various measurement temperatures. The large tunnel magneto-Seebeck (TMS) ratio up to −838.8% for p-MTJs at 200 K is achieved, with Seebeck coefficient S in parallel and antiparallel states of 6.7 mV/K and 62.9 mV/K, respectively. The temperature dependence of the tunnel magneto-Seebeck can be attributed to the contributing transmission function and electron states at the interface between CoFeB electrode and MgO barrier.
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