Abstract
A century ago, Samuel Barnett magnetized a large body by mechanical rotation, and Albert Einstein and Wander de Haas observed rotation of a solid produced by a change in its magnetization. These effects are weak when the rotation is slow, but local mechanical rotations produced by high-frequency surface acoustic waves (SAWs) are very fast. The authors show that one can reverse the moment of a nanomagnet on a solid's surface via SAWs generated by short voltage pulses, for logic and memory applications.
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