Sunday 02 February 2025
Scientists have made a significant breakthrough in understanding how electric currents can control magnetism, paving the way for more efficient and compact magnetic devices.
Magnetism is a fundamental property of materials that determines their ability to attract or repel each other. In recent years, researchers have been studying how electric currents can influence magnetism, with the goal of developing new technologies such as faster and more energy-efficient computers and data storage devices.
In a recent study published in Nature Electronics, scientists from China and the United States have demonstrated that it is possible to control magnetism using electric currents without an external magnetic field. This feat was achieved by creating a special type of material called a topological insulator, which has unique electrical properties that allow it to behave like both a conductor and an insulator.
The researchers used this material to create a device consisting of two layers: one made of the topological insulator and another made of a ferromagnetic metal. When they applied an electric current to the device, they found that the magnetism in the ferromagnetic layer could be switched on and off without any external magnetic field.
This breakthrough has important implications for the development of new technologies such as spintronics devices, which use the spin of electrons instead of their charge to store information. Spintronics devices have the potential to be more energy-efficient and faster than traditional electronic devices.
The researchers also found that the device could be used to control the magnetism in the ferromagnetic layer with high precision, allowing for the creation of complex magnetic patterns and structures. This capability has the potential to be used in a wide range of applications, including data storage and processing.
Overall, this study represents an important step forward in our understanding of how electric currents can influence magnetism, and it opens up new possibilities for the development of advanced technologies based on spintronics principles.
In their experiment, the researchers created a device consisting of two layers: one made of the topological insulator and another made of a ferromagnetic metal. When they applied an electric current to the device, they found that the magnetism in the ferromagnetic layer could be switched on and off without any external magnetic field.
The researchers were able to control the magnetism with high precision, allowing for the creation of complex magnetic patterns and structures. This capability has the potential to be used in a wide range of applications, including data storage and processing.
Cite this article: “Control of Magnetism Using Electric Currents Without External Field”, The Science Archive, 2025.
Electric Currents, Magnetism, Topological Insulators, Ferromagnetic Metals, Spintronics, Data Storage, Processing, Energy Efficiency, Magnetic Patterns, Precision Control
