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Thickness and angular dependence of the magnetocurrent of hot electrons in a magnetic tunnel transistor with crossed anisotropies

Abstract : We have studied the thickness and angular dependence of the magnetocurrent of hot electrons in a magnetic tunnel transistor (MTT) with crossed magnetic anisotropies. In a first step, we show that the magnetocurrent increases with ferromagnetic layer thickness as for MTTs with collinear magnetic configurations. The maximum magnetocurrent value is obtained to be 85%, which is close to the theoretical maximum value of 100% for MTTs with crossed magnetic configurations. In a second step, we demonstrate that we are able to reproduce both current vs field direction and current vs field intensity measurements in a framework taking into account a reduced number of magnetic parameters and a simple cosine dependence of the hot-electron current on the angle between magnetizations.
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https://hal.univ-lorraine.fr/hal-01686930
Contributor : Michel Hehn <>
Submitted on : Wednesday, January 17, 2018 - 10:45:34 PM
Last modification on : Thursday, March 11, 2021 - 2:26:02 PM
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PhysRevB.96.174426.pdf
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Michel Hehn, C. Vautrin, D. Lacour, G. Sala, Y. Lu, et al.. Thickness and angular dependence of the magnetocurrent of hot electrons in a magnetic tunnel transistor with crossed anisotropies. Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2017, 96 (17), pp.174426. ⟨10.1103/PhysRevB.96.174426⟩. ⟨hal-01686930⟩

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