Modern computers, despite the continuous improvement of technological processes, require a lot of electricity. One of the side effects of such circuitry is heating, which requires additional cooling systems to deal with. Researchers at the Massachusetts Institute of Technology (MIT) have developed a fundamentally new type of transistor that can operate without electric current.
Unlike traditional transistors, magnetic ones can change properties without consuming electricity, practically without generating heat. The principle of their operation is based on a spin wave, a property of electrons in magnetic materials that could not be controlled before. Researchers have proposed manually modulating such waves, changing the magnetization of the transistor, transmitting with their help analogs of data bits.
For this, a film structure of cobalt and nickel was created, when passing through which the wave phase changed and the amplitude decreased. Moreover, to switch the state of the magnetic material did not require electrical energy. This ensured precise control of two changing states of the spin wave, which corresponds to unity or zero (1 and 0) in classical calculations.
According to researchers, magnetic transistors can become the basis of advanced computing technology, comparable in computing power to quantum computers, but without the need to install powerful cooling systems.