Tarequzzaman, M. and Bohnert, T. and Decker, M. and Costa, J. D. and Borme, J. and Lacoste, B. and Paz, E. and Jenkins, A. S. and Serrano-Guisan, S. and Back, C. H. and Ferreira, R. and Freitas, P. P. (2019) Spin torque nano-oscillator driven by combined spin injection from tunneling and spin Hall current. COMMUNICATIONS PHYSICS, 2: 20. ISSN 2399-3650,
Full text not available from this repository. (Request a copy)Abstract
Spin-transfer torque nano-oscillators (STNO) are important candidates for several applications based on ultra-tunable microwave generation and detection. The microwave dynamics in these STNOs are induced by spin currents that are typically generated either by spin polarization in an adjacent ferromagnetic layer or through the spin Hall effect. In this paper, a 3-terminal STNO based on a magnetic tunnel junction is excited by both of these spin injection mechanisms. The combination of these two mechanisms excites the free layer into dynamic regimes beyond what can be achieved by each excitation mechanism individually, resulting in enhanced output powers, a key figures of merit for device performance. The system response can be coherently quantified as a function of the total injected spin current density. The experimental data shows an excellent consistency with this simple model and a critical spin current density of 4.52 +/- 0.18 x 10(9)h/2 e(-1) Am-2.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Apr 2020 06:12 |
| Last Modified: | 17 Apr 2020 06:12 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27523 |
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