Enhancement of microwave emission in magnetic tunnel junction oscillators through in-plane field orientation

Z. M. Zeng, P. Upadhyaya, P. Khalili Amiri, K. H. Cheung, J. A. Katine, J. Langer, K. L. Wang, H. W. Jiang

研究成果: Article同行評審

35 引文 斯高帕斯(Scopus)

摘要

We observe giant enhancement of microwave emission in MgO-based magnetic tunnel junction nano-oscillators through in-plane magnetic field orientation. At an optimal in-plane field angle, the output power reaches up to 240 nW, two orders of magnitude higher compared to the vicinity of the easy axis (∼1 nW). Moreover, in this condition, the linewidth is significantly narrowed (<100 MHz) and the additional precession modes are suppressed. Analysis of the data indicates that the optimal field angle is influenced by the field-like torque. The results demonstrate that controlling the in-plane magnetic field orientation can be an important strategy for developing high-power spin-torque oscillators.

原文English
文章編號032503
期刊Applied Physics Letters
99
發行號3
DOIs
出版狀態Published - 2011 七月 18

All Science Journal Classification (ASJC) codes

  • 物理與天文學(雜項)

指紋

深入研究「Enhancement of microwave emission in magnetic tunnel junction oscillators through in-plane field orientation」主題。共同形成了獨特的指紋。

引用此