The key is superconductors. The realization of superconductivity diodes is an important topic in fundamental research. The assumption that magnetism and superconductivity coexist has been proved by a research team that includes the theoretical physicist from the University of Innsbruck. This is reported in Nature physics.
A material behaves like a superconductor in one direction of current flow and like a Resistor in the other, according to one person. In contrast to a conventional diode, a superconducting one has no losses in the forward direction. Future quantum electronics could be based on this. The diode effect was created by physicists about two years ago. The weak effect was caused by an external magnetic field, which is very disadvantageous in technological applications.
Experiments carried out at Brown University do not need an external magnetic field. The experiments show that magnetism and superconductivity coexist in a system consisting of three layers of Graphene. The system creates its own magnetic field.
The effect was very strong. There is an electric field that can be used to reverse the direction of the diodes. This makes trilayer graphene a promising platform for the superconductivity effect.
Graphene is promising.
Graphene, a material consisting of a single layer of carbon atoms, was used to produce the diode effect. The ability to conduct electric current without loss is one of the new properties that comes from stacking several layers of Graphene.
The coexistence of magnetism and superconductivity is demonstrated by the fact that there is no magnetic field in this system. The potential to improve our understanding of fundamental processes in many-body physics is shown by this.
More information: Jiang-Xiazi Lin et al, Zero-field superconducting diode effect in small-twist-angle trilayer graphene, Nature Physics (2022). DOI: 10.1038/s41567-022-01700-1 Journal information: Nature Physics
All Rights Reserved © 2024
