Home page
spintronics is deadend
(Fig.1) a very bulky, energy-inefficient useless transistor needing cold temperature (< 70K ).
The 2nd, 6th-last, last paragraphs of this hyped news (9/23/2025) say
"MIT researchers have now replaced silicon with a magnetic semiconductor, creating a magnetic transistor that could (= just speculation ) enable smaller, faster, and more energy-efficient circuits" ← fake news
"They use an external magnetic field to change the magnetic state (= irrelevant to spin ) of the material, switching the transistor using significantly less energy" ← fake news
"the researchers plan to further study.." ← still need more research, so useless.
↑ This research paper ( this ↓ )
p.15-Fig.(a) shows this magnetic transistor is far bigger and bulkier (> 3000nm, from scale bar = 500nm ) than the current compact electric transistor of only less than 50nm
p.15-Fig.1(c), p.16-Fig.2. p.17, p.21 shows this magnetic transistor must be operated at extremely low temperature = 70K, which needs more energy.
↑ Needing extremely low temperature means very energy-inefficient, contrary to the above fake news hyping "magnetic transistor that could enable smaller, faster, and more energy-efficient circuits"
Feel free to link to this site.