Researchers have developed a technology that allows you to store information in the thinner of the electrical device itself, consisting of an inert material, the thickness of only two atoms.
The work of modern computers is based on chips with a coin size with billions of tiny crystals switched between two charge states, which corresponds to 0 or 1, «yes» or «no», «up» or «down» and so on. This makes it possible to encode and process information by electrical signals. Although the crystals are incredibly small sizes, but consist of millions of atoms (approximately 100x100x100), and are able to switch at a speed of about a million times per second.
Now scientists from the University of Tel Aviv committed a breakthrough in this area, having reduced the thickness of the crystals to two atoms. Such a fine structure also allows you to significantly increase the speed of the computing device due to the quantum effects of moving electrons and reduce power consumption.
The team used two-dimensional material with a hexagonal structure from boron and nitrogen atoms with a thickness of one atom. Having disturbed the natural crystalline symmetry, and artificially connecting two such layers, they received a parallel configuration without a displacement, despite the power of repulsion between the atoms of one species. Scientists have achieved this using various configuration of the layers.
Such a violation of symmetry causes an electrical charge to be reorganized between layers and generate tiny internal electrical polarization, perpendicular to their plane. When applying an external electric field in the opposite direction, the system slides in the side direction to switch the orientation of the polarization, which remains stable even after the external field is turned off. It looks like three-dimensional ferroelectric systems.
In the future, the team plans to create two-dimensional crystals with similar properties, but from other combinations of atoms. According to developers, such devices will help improve modern electronics, and will also allow the use of light to control.
Recall that recently researchers also opened a new type of two-dimensional
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