In superconductors, Small Storms of Electrons, called quantum vortices, can occur, which have an important effect on high-performance devices such as quantum sensors. Today, a new and powerful vortex has been discovered, according to an international team of researchers. Egor Babaev, a professor at the KTH Royal Institute of Technology in Stockholm, says that the study revises the current understanding of how electrons can flow in superconductors, based on the work on quantum vortices that was achieved by the 2003 Nobel Prize.
KTH researchers, in collaboration with researchers from Stanford University, the TD Lee Institute in Shanghai and AIST in Tsukuba, found that the magnetic field produced by the vortices in the superconductor can be divided into many more values than previously thought. his eyes. This represents a new insight into the basic principles of superconductivity, and can be applied to electronics.
In a quantum vortex
A magnetic flux vortex occurs when an external magnetic field is applied to a superconductor. The magnetus is entering the superconductor in the form of a stretching strand that forms the cords. Babaev speaks at the beginning, the survey is at the quantcwinds going through the SuperCondocks on the magnet. But the arbitrary part of the quantum flux is not possible to measure in the first theory of superconductivity.
Using the Superconducting Quantum Interference Device (SQUID) at Stanford University, co-authors Babaev, scientist Yusuke Iguchi and Professor Kathryn A. Moler, showed at the microscopic level that quantum vortices can exist in an electron beam. The team can create and move these tiny vortices, Moler said. “Professor Babaev has been telling me for years that we might see something like this, but I didn’t believe it until Dr Iguchi actually saw it and did a number of detailed checks,” says -She.
An ‘incredibly rare’ sight
The Stanford researchers found the initial observation of this phenomenon “so incredibly rare,” Iguchi says, that they repeated the experiment 75 times in different locations and at different temperatures. The service shows prophecy of the Babaev year 20 years, which conducts the form of crystals, parts of others can start the disease in the same time. He said, “These associates can be redirected to a little satisfaction of water. “It revolutionizes our understanding of quantum vortices in superconductors,” he says.
Moler supports this conclusion. “I have been looking at vortices in new superconductors for more than 25 years, and I have never seen this before,” he says.
Babaev says that the power of quantum vortices and the ability to control them shows that quantum vortices can be used as carriers of information in efficient computers. “The insights we gain, the innovative approach introduced by our colleagues Dr. Iguchi and Professor Moler at Stanford, may be useful in the long run for some computational platforms,” Babaev says.
Source: KTH Royal Institute of Technology
