Motion of spintronic nano-oscillators
Researchers from University of Gothenburg and KTH explain the origin behind the factor limiting the coherence time of a nano-oscillator. The coherence time refers to the time for which oscillations can be maintained without becoming imprecise. The study is published in the journal Physical Review Letters.
Nanopillars consisting of two magnetic layers separated by an insulating or non-magnetic metal can exhibit oscillations: a dc current can make the magnetization in one layer precess with frequencies in the gigahertz range. This is so called spin torque oscillator (STO) is potentially useful for RF and microwave devices e.g., mobile phones due its high frequency tunability, high modulation rate, and nano-size.
Last modified: June 08, 2012
Responsible for this page: Anna Wallin
Chalmers university of technology - SE-412 96 gothenburg - Phone +46 (0)31-772 1000