Printing of Sharif University Professor in Nature Magazine – | Iranian and world news

Dr. Mehdi Kargari, Associate Professor of Physics, Sharif University of Technology, has published his article titled “SuperConductivity and a Van Hove Singularity Confined to the Surface of a Topological Semimetal”, “Superconducting and Technique of Vench-Hoff was limited to a limited level.

The study says that superconducting is one of the oldest topics in the physics of condensing matter. Its discovery goes back to the early years of the twentieth century. The most prominent feature of a superconducting superconducting is that the resistance of the substance called the so -called transition temperature is zero. The zero -resistance of the female has created a great deal of incentives over the past decades to use superconducting materials in the transport of electric current as well as the creation of high magnetic fields.

For decades – since the first year of the first sample of superconducting, there have been two basic questions about superconducting materials in condensation and material science, which has received a lot of research. The first question is, what is basically the reason for the superconducting event- called electrons pairing-? And the second question is how can the transition temperature be increased to room temperature? But there has been another very important issue since about a year, and some superconducting materials can be a good platform for storing and processing quantum information. These relatively rare superconducting materials are called topological superconductors. To find such substances, so far, most of the efforts have focused on inducing conventional superconductors in nanoisms as well as two -dimensional intercontinental space. It is difficult to find and synthesize the right materials to create such compounds.

The question now is, is it possible to realize the topological superconductors naturally in materials? While topological superconductors in two-dimensional or quasi-two-dimensional materials and the conditions for quantum-topological calculations are the main challenge is that the major material in 3D nature and the properties of the material and the material are similar. The purpose of this article is to answer the question how to create a limited superconduct for a three -dimensional material that has the same properties of two -dimensional superconductors. In the experimental research section, a substance is introduced that is merely superconducting, and the tragory and spectroscopy analysis shows its two -dimensional nature. The theoretical section has shown that this surface superconducting can have topological energy gap, and superconducting vortex can be a good platform for designing quantum quote and information processing.

It is worth noting that the results of this study, which is the product of an international cooperation from the universities of US, China, Switzerland and Iran, has been published in the journal Nature Communication with an impact coefficient of 1.2 and is available through this link.