Phase-Locking and Frustration in an Array of Nonlinear Spin-Torque Nano-Oscillators (Preprint)
Abstract
We demonstrate that high-frequency cooperative dynamics of an array of coupled nonlinear spin-torque nano-oscillators (STNO) can be controlled by introduction of an additional external phase shift BETAc between the microwave current, which couples STNOs, and the total array microwave voltage. When this external phase shift BETAc compensates the intrinsic phase shift BETA0, caused by the STNO nonlinearity, a phase-locking regime with increased output power and vanishing inhomogeneous linewidth broadening is achieved. In the opposite case, when external and intrinsic phase shifts are added, the STNO array demonstrates a frustration regime with low output power and wide and noisy frequency spectrum.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 23, 2009
- Accession Number
- ADA511257
Entities
People
- Andrei Slavin
- Elena Bankowski
- Grant Gerhart
- Vasil Tiberkevich
Organizations
- Oakland University