Magnetic Memory


               Magnetic Computers as mentioned earlier are not only the power source that can generate power on its own without the much need for foreign electric supply but also the Magnetic computers are just like the normal classic computers but with some self-power generating abilities. Magnetic Computers are lighter and portable compared to Quantum Computers ( There is no confirm computer structure in the case of building a magnetic computer. But it is expected that magnetic computers are just the same as normal classic computers not like the huge quantum computers.). 

How did this all begin? 

                By designing a circuit architecture that removes the need for bulky components to inject electrical currents, the MIT researchers achieved a big step forward. This is advantageous since such components may generate signal noise, decreasing performance.

The researchers used stacked nanofilms of magnetic material to create a nanometer-wide magnetic domain wall to regulate a passing spin-wave without the use of any extra components or electrical current. The spin-wave may then be tweaked to change the domain's location and width as needed, allowing for fine control of two separate spin-wave states. These spin states correspond to the 1s and 0s utilized in classical computing. In the future, these spin waves might be supplied into a circuit in pairs through dual channels. This pair's members might be manipulated for distinct attributes, resulting in quantifiable quantum interference. Photon-wave interference is used in quantum computing in a similar way.

"We can regulate the spin-wave and produce these two different states without any actual energy expenses by employing this thin domain wall." "All we have is intrinsic magnetic material and spin waves," Liu explains.

As a result, the researchers believe that spintronics-based devices that rely on interference might theoretically rival quantum computers in terms of sheer computational power, allowing them to do complicated tasks that traditional computers struggle with.

How does this whole thing work?

               Magnons are the combined spins of numerous electrons, whereas spin waves are short-wavelength energy ripples. Despite the fact that magnons are not real particles, they can be tracked and utilized in computers in the same manner that electrons can.
The researchers developed a pattern of cobalt/nickel nanofilms that are a few atoms thick, have precise magnetic characteristics, and can manage a large volume of spin waves. In the center of a magnetic substance with a certain lattice structure, place this wall. After then, the technique was integrated into a circuit.
The researchers created continuous spin waves in the material on one side of the circuit. The magnons spin in the opposite way when this wave travels through the wall, flipping from north to south in the first area and beyond the wall. As a result, the phase of the wave changes dramatically. During the experiment, the researchers used a second antenna on the other side of the circuit to detect and send an output signal in their trials. 
The phase of the input wave turned 180 degrees in its output state, according to their findings. The wave's magnitude the distance between the highest and lowest peak had also shrunk significantly.