SPIN-TORQUE MICROWAVE DETECTOR WITH OUT-OF-PLANE PRECESSING MAGNETIC MOMENT
Abstract
Operation of a spin-torque microwave detector (STMD) in a weak perpendicular bias magnetic field has been studied theoretically. It is shown that in this geometry a novel dynamical regime of STMD operation, characterized by large-angle out-of-plane magnetization precession, can be realized. The excitation of the large-angle precession has threshold character and is possible only for input microwave currents exceeding a certain frequency-dependent critical value. The output voltage of an STMD increases with the frequency of the input signal, but is virtually independent of its power. An STMD operating in the out-of-plane regime can be used as a non-resonant threshold detector of low frequency microwave signals and for applications in microwave energy harvesting.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 18, 2012
- Accession Number
- ADA555198
Entities
People
- A. N. Slavin
- Elena N. Bankowski
- I. N. Krivorotov
- O. V. Prokopenko
- S. Jaroch
- Thomas Meitzler
- V. S. Tiberkevich
Organizations
- United States Army Tank Automotive Research, Development and Engineering Center