Originally posted by twhitehead
My understanding is that:
1. Spin is not actually rotation, but a quantum property.
2. Spintronics usage spin in storage, not transmission, and because normal computers use power to maintain storage (in RAM and CPI) whereas spintronics does not, it saves power.
This is equivalent to using a thumb drive as your RAM, except the technology in your thumb drive is much slower than spintronics.
1. Spin is not actually rotation, but a quantum property.
yes, I know. I know that 'spin' is not literally physical rotation in the Newtonian mechanical sense like I deliberately implied.
I just wanted to keep it simple for RJHinds.
Spintronics usage spin in storage, not transmission,
Actually, it can be used in both albeit in subtly different ways:
http://www.bit-tech.net/news/hardware/2012/08/14/ibm-spintronics/1
“...
Spintronics, a portmanteau of 'spin,' 'transport' and 'electronics,' promises to revolutionise the semiconductor market. Spintronic components use the spin of the electron to store a zero or a one, rather than the charge of the electron. The result is the storage and
transmission of data - and even calculations - with no energy dissipation, and a resulting reduction in the power required
(my emphasis)
...”
And it would be just a matter of time before it WILL be used for both and we would have microchips, including both microprocessors and memory chips, that are 100% spintronic (but really hope it would be ~5 years time and not ~50 years time!!!) In the case of where and when it is used for transmission and not memory, the spintronic signal can only be transmitted through a micro wire for a few micrometers at most. But, by careful layout of circuitry to work with that limitation, that is enough distance in theory to make a cpu or a whole microprocessor chip completely 100% spintronic.
I have also have heard of the possibility of spintronics being potentially used for power transfer but have no understanding of how that would work nor the point of doing it that way (perhaps it saves energy again? -don't know) nor whether it would be any better than normal methods of power transfer.