Comment Re:Why spintronics cannot work! (Score 1) 148
I think you are confusing spintronics with quantum computing. Spintronics include many different applications (just like electronics). From what I know, the status of each application is:
1. GMR - it works and works beautifully. It has brought about a revolution in disk storage technology.
2. MRAM - it works. Prototypes have been made and demonstrated. It's the matter of refining the technology so that it can be commerically competitive with semicondutors.
3. Spin transistors - it may work. Many designs have been proposed. It's the matter of find the right design and figuring out how to make it work.
4. Spin tunneling devices - the principle is understood but how to use it in real applications still needs to be worked on.
5. Quantum computing - it will probably never work. Yeah, you can compute with no problem. The problem is, how can you get the results out without destroying the quantum states? We may need to rewrite quantum mechanics before this one works.
So by and large, spintronics works.
1. GMR - it works and works beautifully. It has brought about a revolution in disk storage technology.
2. MRAM - it works. Prototypes have been made and demonstrated. It's the matter of refining the technology so that it can be commerically competitive with semicondutors.
3. Spin transistors - it may work. Many designs have been proposed. It's the matter of find the right design and figuring out how to make it work.
4. Spin tunneling devices - the principle is understood but how to use it in real applications still needs to be worked on.
5. Quantum computing - it will probably never work. Yeah, you can compute with no problem. The problem is, how can you get the results out without destroying the quantum states? We may need to rewrite quantum mechanics before this one works.
So by and large, spintronics works.
