Quasi-linear spin torque nano-oscillators
US9577653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Jan 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B15/006
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Techniques, systems, and devices are disclosed for implementing a quasi-linear spin-torque nano-oscillator based on exertion of a spin-transfer torque on the local magnetic moments in the magnetic layer and precession of the magnetic moments in the magnetic layer within a spin valve. Examples of spin-torque nano-oscillators (STNOs) are disclosed to use spin polarized currents to excite nano magnets that undergo persistent oscillations at RF or microwave frequencies. The spin currents are applied in a non-uniform manner to both excite the nano magnets into oscillations and generate dynamic damping at large amplitude as a feedback to reduce the nonlinearity associated with mixing amplitude and phase fluctuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.