Researchers build sensor consisting of only 11 atoms.

Islamabad -- In theory, we can make electronic data processing much more efficient by switching to spintronics. Instead of using electrical signals, this technology makes use of magnetic signals to transmit data. Unfortunately, magnetism tends to get incredibly complicated, especially at the tiny scale of our computer chips. You could view a magnetic wave as millions of compass needles performing a complex collective dance.

Not only do the waves propagate extremely fast, causing them to vanish in mere nanoseconds, the tricky laws of quantum mechanics also allow them to travel in multiple directions at the same time. This makes them even more elusive. In...

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