Spintronik

the Spintronik (from the words spin and electronics), a new Forschungsgebiet, which is still in the basic research, uses the magnetic moment of the electron for information representation and - processing, not only the charge like the conventional Halbleiterelektonik. The magnetic moment of the electrons results to the spin from their self-rotation (in the transferred sense) . The Spintronik is based on the possibility of the so-called “spin injection” in semiconductor materials. With the spin injection spinpolarized rivers in semiconductors can be produced, which exhibit a further degree of freedom, which can be used as additional characteristic for the information representation in the form of the Spinrichtung.

There is the prospect that elements, which switch only the spin of the electron can be clearly faster than conventional, which are based on the charge transfer. In addition the procedure would need less energy than a comparable charge transfer with same information contents. If this technology becomes also industrially load-carrying, it would have the substantial advantage that for it a large part of the today's finishing technique for semiconductors could be used.

An application of the Spintronik is already in current articles available: New non removable disk types have “spin valve” - thin section read heads, which use the Riesenmagnetowiderstand. They can detect thereby on the plate very small magnetic domains.

Also as technology for quantum computers the Spintronik is discussed, which would be substantially more efficient then because of its enormous speed with the factorizing of prime numbers and could have substantial influence on cryptography.

The Spintronik is a research direction of nano-electronics.

See also: Magnetoelektronik, MRAM

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