What is Spintronics?



Spintronics.  It uses the spin of an electron to represent binary data (0-1). Spintronics are adept at much higher speeds while requiring far less power than the traditional methods of using electron charges to represent data.

It was originally developed in the 1920’s and reworked in the 1980’s by way of giant magnetoresonance (GMR). At the time, It was widely used in sensors and non- volatile memories, as it reads heads for disk drives. 

Super conductors can enhance central effects in spintronics, such as magnetoresistance effects, spin lifetimes and dissipation less spin-currents.

The simplest way to create a spin polarized current in a metal is to pass the current through a ferromagnetic material.

There are a few other devices that are metal-based and use spintronics.

These include tunnel magneto resistance  (TMR), where  movement is achieved by using quantum, mechanical tunneling of electrons through ferromagnetic layers. 

There’s Spin transfer torque, where a current of spin polarized electrons are used to control the magnetization direction of ferromagnetic electrodes in the devices. 

Also, there’s spin-wave logic devices that carry information in the phase. Interference and spin wave scattering can perform logic operations.


Hugs, 

Krissy 


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