Modulation of Individual and Mutually Synchronized Nanocontact-Based Spin Torque Oscillators

被引：29
|
作者：
Muduli, P. K. [1 ,2 ]
Pogoryelov, Ye. [2 ]
Mancoff, F. [3 ]
Akerman, J. [1 ,2 ]
机构：
[1] Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden
[2] Royal Inst Technol, S-16440 Kista, Sweden
[3] Everspin Technol Inc, Chandler, AZ 85224 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2011年 / 47卷 / 06期
基金：
瑞典研究理事会;
关键词：
Modulation; nonlinear frequency and amplitude modulation; spin torque oscillators; synchronization of spin torque oscillators; MAGNETIC TUNNEL-JUNCTIONS; PHASE-LOCKING; POLARIZED CURRENT; NANO-OSCILLATORS; MICROWAVE GENERATION; DRIVEN; DEVICES; EXCITATIONS; FIELD;
D O I：
10.1109/TMAG.2010.2096463
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We study current modulation of spin torque oscillators (STOs) based on single and double nano-contacts. For single nano-contact devices, we show modulation for a carrier frequency of 19-40 GHz and modulation frequencies from 50 MHz to 1 GHz. We show that the behavior of modulation and the asymmetry in the power of the modulation sidebands can be very well modeled, and predicted, using nonlinear frequency and amplitude modulation (NFAM) calculations based on the free-running STO parameters. Modulation of synchronized double nano-contact STOs is equally well modeled by NFAM theory and demonstrates the feasibility of communication applications based on arrays of synchronized STOs.
引用
收藏
页码：1575 / 1579
页数：5
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