Spintronics-Info: the spintronics experts

Spintronics-Info is a news hub and knowledge center born out of keen interest in spintronic technologies.

Spintronics is the new science of computers and memory chips that are based on electron spin rather than (or in addition to) the charge (used in electronics). Spintronics is an exciting field that holds promise to build faster and more efficient computers and other devices.

Recent spintronics News

Researchers design a spin-engine that uses spintronics to harvest energy from heat at room temperatures

An international team of researchers from France and Sweden designed a new concept of an energy harvesting engine based on spintronics and quantum thermodynamics. The basic idea is to use electron spin to harvest thermal fluctuations at room temperature.

Spin-polarized energy landscape of the spin-engine photo

The researchers make use of the fact that paramagnetic centers, or atom-level magnets, fluctuate their spin orientation due to heat. In the so called spin-engine, the a spontaneous bias voltage V appears between the electrodes, and thus a spontaneous current flows once the electrical circuit is closed.

There are still many challenges to create such devices (the team made some initial experiments) - but the researchers say that this concept could create chips that continuously produce electrical power with a power density that is 3x greater than raw solar irradiation on Earth.

Researchers create spin transport channels on curved surfaces

Researchers from the University of Groningen created curved spin transport channels. The researchers discovered that this new geometry makes it possible to independently tune charge and spin currents.

Non-local spin-valve in a curved nano-cahnnel (SEM photo)

Most spintronics devices to date were made from flat surfaces, and this research focused on spin currents behaviors in curved channels. The scientists say that the new research enables the efficient integration of spin injectors and detectors or spin transistors into modern 3D circuitry.

Quantum Well structures can enhance the TMR of MTJs

Researchers from Japan's National Institute for Materials Science (NIMS) have managed to introduce a quantum well structure into a conventional magnetic tunnel junction (MTJ). The researchers say that the QW structure can enhance the tunneling magnetoresistance (TMR) ratio by spin-dependent resonant tunnel (SDRT) effect, with a value of 1.5 times comparing with no SDRT case, at room temperature.

Quantum Well structure introduced to MTJs (NIMS)

The researchers tell us that the key point of the QW formation is the band mismatch between Cr and Fe for majority band, and the mismatch-free Fe/MgAl2O4 interface. The finding is not just useful for enhancement of TMR ratio, it also provides a benefit that the TMR ratio could be kept almost constant in a wide bias voltage range of from -1V to 0.5V.

Researchers create a graphene-based 2D spin transistor

Researchers from the University of Groningen developed a two-dimensional spin transistor, in which spin currents were generated by an electric current through graphene. The device also include a monolayer transition metal dichalcogenide (TMD) that is placed on the graphene to induce charge-to-spin conversion.

Scientists create fully electronic 2-dimensional spin transistors image

Graphene is an excellent spin transporter, but spin-orbit coupling is required to create or manipulate spins. The interaction is weak in the graphene carbon atoms, but now the researchers have shown that adding the TMD layer increases the spin-orbit coupling.

The University of Konstanz to establish a superconducting spintronics research hub

The Sofja Kovalevskaja Award, Germany's most highly-endowned research award for early-research scientists, went this year to Dr Angelo Di Bernardo from Cambridge University. Dr. Angelo was awarded with 1.65 million Euros and will move to the University of Konstant in which he will establish a research hub in the field of superconducting spintronics.

Dr. Angelo's project that won the award is dealing with superconducting spintronics with oxides and 2D materials.

Researchers demonstrate the longest spin lifetime in a graphene sheet

Researchers from Spain's ICN2, in collaboration with Imec and K.U. Leuven have developed a modified graphene-based nanodevice fabrication technique that can increase the spin lifetime and relaxation length by up to three times.

ICN2 graphene device spin lifetime photo

The researchers used CVD-made graphene grown on a platinum foil. By optimizing several standard processes, the researchers managed to reduce the impurity level of the graphene.