Spin-torque diode radio-frequency detector with voltage tuned resonance

被引：28
|
作者：
Skowronski, Witold [1 ]
Frankowski, Marek [1 ]
Wrona, Jerzy [1 ,2 ]
Stobiecki, Tomasz [1 ]
Ogrodnik, Piotr [1 ,3 ]
Barnas, Jozef [4 ,5 ]
机构：
[1] AGH Univ Sci & Technol, Dept Elect, PL-30059 Krakow, Poland
[2] Singulus Technol, D-63796 Kahl, Germany
[3] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland
[4] Adam Mickiewicz Univ, Fac Phys, PL-61614 Poznan, Poland
[5] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland
来源：
APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 07期
关键词：
MAGNETIC TUNNEL-JUNCTIONS; DRIVEN; WAVES;
D O I：
10.1063/1.4893463
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on a voltage-tunable radio-frequency (RF) detector based on a magnetic tunnel junction (MTJ). The spin-torque diode effect is used to excite and/or detect RF oscillations in the magnetic free layer of the MTJ. In order to reduce the overall in-plane magnetic anisotropy of the free layer, we take advantage of the perpendicular magnetic anisotropy at the interface between ferromagnetic and insulating layers. The applied bias voltage is shown to have a significant influence on the magnetic anisotropy, and thus on the resonance frequency of the device. This influence also depends on the voltage polarity. The obtained results are accounted for in terms of the interplay of spin-transfer-torque and voltage-controlled magnetic anisotropy effects. (C) 2014 AIP Publishing LLC.
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页数：4
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