Junction size dependence of the heat controlled magnetic anisotropy in magnetic tunnel junctions | Zendy

Minori Goto | Zendy; Reika Kobayashi | Zendy; Ryota Okuno | Zendy; Tomohito Mizuno | Zendy; Takekazu Yamane | Zendy; Naomichi Degawa | Zendy; Tsuyoshi Suzuki | Zendy; Atsushi Shimura | Zendy; Susumu Aoki | Zendy; Junichiro Urabe | Zendy; Shinji Hara | Zendy; Hikaru Nomura | Zendy; Yoshishige Suzuki | Zendy

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Junction size dependence of the heat controlled magnetic anisotropy in magnetic tunnel junctions

Author(s) -

Minori Goto,

Reika Kobayashi,

Ryota Okuno,

Tomohito Mizuno,

Takekazu Yamane,

Naomichi Degawa,

Tsuyoshi Suzuki,

Atsushi Shimura,

Susumu Aoki,

Junichiro Urabe,

Shinji Hara,

Hikaru Nomura,

Yoshishige Suzuki

Publication year - 2021

Publication title -

applied physics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.911

H-Index - 94

eISSN - 1882-0786

pISSN - 1882-0778

DOI - 10.35848/1882-0786/ac3faf

Subject(s) - condensed matter physics , materials science , tunnel magnetoresistance , anisotropy , perpendicular , magnetic anisotropy , current (fluid) , magnetic field , physics , magnetization , ferromagnetism , optics , thermodynamics , geometry , mathematics , quantum mechanics

We investigated the heat controlled magnetic anisotropy (HCMA) in magnetic tunnel junctions with various junction sizes. We evaluated the HCMA from perpendicular magnetic anisotropy under a direct current voltage measured by the spin-torque diode technique. The maximum HCMA magnitude of 5.4 μ J (Wm) −1 was observed, and the HCMA increased with increasing diameter. Our results can be explained by a simple heat dissipation model and suggest that the in-plane heat current affects HCMA.

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