The all-metal spin transistor
- 1 May 1994
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Spectrum
- Vol. 31 (5) , 47-51
- https://doi.org/10.1109/6.278401
Abstract
An entirely new kind of switching device is fabricated entirely from metals. The three-layer, three-terminal spin transistor behaves somewhat like a semiconductor bipolar transistor; though the physical operating principles differ. The emitter and collector layers of the spin transistor are ferromagnetic films. The base layer is a nonmagnetic metal, such as gold, copper, or silver. Being all-metal the device can be made much smaller than semiconductor transistors-less than 0.1 micrometer on a side. Although still a technological infant, the device has the electrical properties required by memory cells, current amplifiers, and logic circuits. A computer made only of metals seems quite possible.<>Keywords
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