The new mechanism will allow to store information in a single atom
Scientists from the University Redbuda discovered a new mechanism of magnetic storage of information in the smallest unit of matter: a single atom. Despite the fact that the proof of principle has been demonstrated at very low temperatures, this mechanism promises to operate at room temperature. Thus, it will be possible to store thousands of times more information than it is now on the hard drives. The results were published in Nature Communications.
When you get to the level of a single atom, the magnetic atoms become unstable. "Permanent magnet detects the presence of the north and south poles, which are in the same orientation," says Professor Alexander Hacheturyan. "But when you get to a single atom, the north and south poles of the atoms begin to change and do not know in which direction to point out because they become extremely sensitive to their surroundings. If you want to in a magnetic atom stores information, it should not rush. The scientists have wondered over the past decade: how many atoms necessary to stabilize the magnet to the atom ceases to oscillate, and how long it can be stored in the information before the atom spun again? Over the past two years scientists from Lausanne and IBM have figured out how to keep the atom from turning, and showed that a single atom can act as the role of memory. To do this, they had to use very low temperatures - -233 degrees Celsius. This greatly limits the use of technology. "
A new approach to storing information in an atom
Scientists from Redbud University took a different approach. Choosing a special substrate - semiconductor black phosphorus - they have discovered a new way to store information in individual atoms of cobalt, which solves the traditional problems with instability. Using a scanning tunnel microscope, when the sharp metal probe is moved over the surface at a distance of just a few atoms, they "see" single atoms on the surface of cobalt black phosphorus. They were also able to directly show that the individual cobalt atoms can be manipulated by introducing them to one of the two bit states.
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