With the progress of computer science and the increasing amount of social information, people have higher and higher requirements on the speed, power consumption, volume and other performance of information storage devices. Traditional silicon chips can no longer meet the needs of the current era of intelligent Internet of Things development. Therefore, the research of new chip to adapt to the development of The Times is an important area that scientists are trying to break through. A team of researchers from Stanford University, the University of California, Berkeley and Texas A&M University have discovered a new data storage chip that can replace silicon chips with smaller, densier, faster and more energy efficient capabilities. The new chip, a two-dimensional (2D) metal chip made from layered tungsten telluride (WTe2), has a single-layer thickness of just three atoms but can be stored more than 100 times faster.
The team applied a small current to the tungsten telluride thin-layer structure, causing its odd layers to shift steadily relative to even ones, and used an arrangement of odd and even layers to store binary data. After the data is written, they read it without interfering with the permutations through a quantum property called Bailey curvature. It is known that two-dimensional monolayer tungsten ditelluride is the first two-dimensional material known to have "ferroelectric flip" phenomenon and is also the first "topological insulator" discovered.
Compared with existing silicon-based data storage systems, the new system can fill a very small amount of physical space with more data, and the energy required to move layers is minimal, the researchers said. In addition, the offset occurs so quickly that data can be written 100 times faster than existing technologies.
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