A germanium-antimony compound has characteristics similar to graphene

The single-layered structure of graphene with only one carbon atom thickness has spawned a large number of studies on its unique electronic, optical, and mechanical properties. According to a report from the Physicist Organization Network on April 24th, researchers at the Massachusetts Institute of Technology (MIT) discovered that a gallium-tellurium compound has many unusual characteristics similar to graphene, and in some cases can be replaced with graphene as a replacement. material.

The researchers found that the helium-neodymium film material has a variety of different controllable properties, depending on the temperature and pressure of the environment, the material will be thickened and oriented growth. The results of the study were published in the latest issue of Nano Express.

The new material has a unique two-dimensional planar structure and a Dirac cone-shaped electron energy band structure termed the Dirac cone two-dimensional. This unusual electronic properties like graphene can cause electrons to move in different ways, exceeding the possibilities in most materials, and this will be used to make next-generation electronic chips or thermoelectric generators and coolers. Very desirable property.

Researchers say that in these materials, electrons "become comparable to light beams", enabling new chips to have faster computing power. In some cases, electrons flow faster than traditional silicon chips and may reach hundreds of times. Similarly, in a thermoelectric application, the temperature difference between the two sides of the device creates a faster electron motion current, coupled with stronger thermal insulation performance, which promotes more efficient power generation, such as the use of the temperature difference between the two sides of the satellite, yin and yang. It is possible to show the use of power for satellites.

Researchers say that no equipment has been manufactured using this new material, and some details have yet to be resolved, but the principles are clear and will be verified within a year. Until the creation of a real device, many mysteries will be revealed. (Hua Ling)