WHY SPINTONICS ?
Limitations of Electronics:
Though the field of electronics is considered to be very vast, even his field is attaining its limitations. The two main limitations which is propelling the scientists and researchers new technology are:
- Moore’s Law
- Gate Width
Moore, one of the co- founders of Intel Corporation, visualized in the early 1970’s that the number of transistors fabricated in a single chip will double for every 18 months. Now, after almost three decades, the number of transistors fabricated in a single chip is so large that it places severe demands on the material and fabrication technology used.
Some scientist and experts have predicted that by the year of 2008, the width of gate electrode in an FET will be around 45nm, which again places severe demands on the material and fabrication technology used. The figure below shows the variation of the gate electrode length over the years.
Alternatives of Electronics:
Due to the above mentioned limitations many alternatives for electronics have been considered such as:
- Bottom down approach of fabrication
- Changing the characteristics of info carriers
- Molecular Electronics
Of the above alternatives Spintronics has gained prominence because of the fact that spin devices can be fabricated with small variations to present fabrication technology whereas other alternatives require complete replacement of present fabrication units.
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