Magic rotation double -layer graphene can be turned into microscopic imaging. Picture source: “Nature”
According to the latest research published by Nature Magazine, researchers at the Institute of Sciences in the Weitzman Institute of Israel have developed a new type of scanning probe microscope, that is, quantum reversing microscope (QTM), which can create new quantum materials and at the same time Observe the most basic quantum properties of its electronic. This research has opened the way for new experiments of quantum materials.
About 40 years ago, the invention of the scanning probe microscope completely changed the visualization method of electronic phenomena. Although today’s probes can obtain various electronic characteristics at a single location of the space, so far, the scanning microscope cannot be achieved, and the existence of electronic quantum mechanics directly in multiple positions, and providing direct quantum characteristics of the electronic system. access.
The QTM principle involves two -layer atomic material “distort” or rotation. It turns out that the torsional angle is the most critical parameter to control the electronic behavior: just change it for only one tenth, and the material can be transformed from a strange superconductor to an unconventional insulator, but this parameter is also the most difficult to control in the experiment. Essence
Based on the unique Fan Dehua, QTM can create primitive two -dimensional heterogeneous knots, which provides a lot of related interference paths for electronic tunnels to enter a sample. Because a continuous scanning angle is added between the needle tip and the sample, this microscope can detect electrons along a line of the kinetic space, similar to a line detection electrons that scan the tunnel microscope along the real space.
The experimental demonstration proves the coherent of the chamber temperature of the needle tip. The researchers also applied greater local pressure to observe the low -energy bands of twisted double -layer graphene.
Researchers said that new tools can directly consider quantum electron waves, and can observe their quantum “dance” in the internal performance of the materials, and also provide a new “lens” for scientists to observe and measure the nature of quantum materials.
Such a deep peeping of the quantum world can help reveal the basic truth about nature. In the future, QTM will provide researchers with unprecedented new quantum interface spectrum, and new “eyes” that discover quantum phenomena.