Controlling the movement of single skyrmions at room temperature. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

Controlling the movement of single skyrmions at room temperature

12.12.2021

Scientists from the Japanese Institute of Physical and Chemical Research RIKEN have demonstrated a technology they have developed that allows them to control the movement and behavior of single skyrmions - tiny magnetic vortices that can be used as information carriers in computing devices and data storage devices of the next generations. But the most outstanding thing about this achievement is that all manipulations with skyrmions can be carried out with the help of weak current pulses and at room temperature.

Skyrmions are tiny quasi-particles that can appear and move in the medium of materials with special magnetic properties under the influence of an electric current. At the same time, the strength of such a current is several times less than the strength of the current required to switch the state of traditional magnetic domains, on the basis of which modern hard drives and other magnetic storage media function.

This feature fuels the hopes of scientists who are working on storage devices with extremely low power consumption and extremely high storage density. In addition, skyrmions can become the basis for the operation of so-called spintronic computing devices, but this requires technologies that allow one to operate with individual skyrmions of very small sizes.

In most cases, studies involving skyrmions are carried out at extremely low temperatures and with skyrmions or groups of skyrmions of relatively large sizes, on the order of one micrometer or more. However, Japanese researchers used a very tricky magnetic material, a compound of cobalt, zinc and manganese (Co9Zn9Mn2), which is known as a magnetic material with a chiral crystal lattice.

Using a thin plate of magnetic material, the scientists were able to find the conditions under which tiny skyrmions, 100 nanometers in size, form in the material at room temperature. Observations of the behavior and movement of these quasi-particles were carried out using the Lorentz transmission electron microscopy technology. And the control was carried out by short-term peaks of the magnetic field created by electrical impulses, with a duration of several nanoseconds.

The researchers found that skyrmions, with the help of current pulses, are quite easily transferred from a stationary static state to movement in a stream, and move at a relatively high speed of 3 meters per second.

<< Back: Imagination Catapult RISC-V processors 12.12.2021

>> Forward: Earth black box 11.12.2021

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Thanks to NXP, smart chips have halved their weight 31.12.2006

NXP Semiconductors announced the start of mass deliveries of ultra-thin ICs (integrated circuits) for smart cards. They are thinner than the diameter of a human hair.

NXP's new SmartMX family of chips, specifically designed for smart cards, are less than 75 microns thick, which is 2 times thinner than standard chips currently being produced. Due to their miniaturization, the new chips allow more flexible design decisions and provide greater protection from environmental factors.

The new 75 µm wafers will be incorporated into MOV6 contactless IC chip packages used in ePassports, eVisas and other electronic documents. With a thickness of only 260 microns, MOV6 is 20% thinner than other brands on the market.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews