Single spin-torque vortex oscillator using combined bottom-up approach and e-beam lithography

被引：19

作者：

Araujo, F. Abreu ^{[1
]}

Piraux, L. ^{[1
]}

Antohe, V. A. ^{[1
]}

Cros, V. ^{[2
,3
]}

Gence, L. ^{[1
]}

机构：

[1] Catholic Univ Louvain, Inst Condensed Matter & Nanosci, B-1348 Louvain, Belgium

[2] Unite Mixte Phys CNRS Thales, F-91767 Palaiseau, France

[3] Univ Paris 11, F-91405 Orsay, France

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 22期

关键词：

DRIVEN; NANOWIRES;

D O I：

10.1063/1.4808451

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A combined bottom-up assembly of electrodeposited nanowires and electron beam lithography technique has been developed to investigate the spin transfer torque and microwave emission on specially designed nanowires containing a single Co/Cu/Co pseudo spin valve. Microwave signals have been obtained even at zero magnetic field. Interestingly, high frequency vs. magnetic field tunability was demonstrated, in the range 0.4-2 MHz/Oe, depending on the orientation of the applied magnetic field relative to the magnetic layers of the pseudo spin valve. The frequency values and the emitted signal frequency as a function of the external magnetic field are in good quantitative agreement with the analytical vortex model as well as with micromagnetic simulations. (C) 2013 AIP Publishing LLC.

引用

页数：4

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