Researchers develop a deterministic method to control magnetic vortex wall chirality using an electric field

Aug 14, 2017

Researchers from the University of Nottingham discovered a new method to control the structure of magnetic domain walls. Controlling and reading the chirality of the domain wall can be eventually used to create information and logic devices.

Deterministic control of magnetic vortex wall chirality by electric field

In a magnetic wire, magnetic domain walls are areas that separate regions where the magnetisation points in opposite directions. Under certain conditions it consists of a region in which the magnetisation rotates around a central vortex core, which points into or out of the wire. The rotation 'direction' (clockwise or anticlockwise) of the vortex wall is called the chirality.

New spintronics book: Organic Spintronics

This book, by Professor Zeev Valy Vardeny, presents an up-to-date summary of the experimental and theoretical aspects of organic spintronics. A panel of international experts details the cutting edge of research in the areas of spin injection and manipulation in organic spin valves, magnetic field effect OLED devices, spin transport effect in relation to spin manipulation, organic magnets, organic spin valves as sensors and the coherent control of spins in organic devices using the technique of electronically detected magnetic resonance.

Researchers develop a nano-neuron based on a spintronics oscillator

Jul 31, 2017

Researchers from France, the US and Japan a spintronics-based oscillator that can mimic the behavior of neurons. A nano-neuron could be used to create new kind of chips that mimic the brain's computational style.

Spintronics oscillator vs Neuron image

The spintronics oscillator is a small cylinder composed of stacked magnets separated by an insulating, non-magnetic, barrier. This design enabled the fabrication of a nano-neuron that is capable of recognizing an input signal, which was in this case a spoken digit (0–9) pronounced by different speakers, with a success rate of 99.6%. This result is on a par with other state-of-the-art technologies.

Bismuthene is a newly developed graphene-like 2D topological insulator

Jul 20, 2017

Researchers from the University of Würzburg developed a new room-temperature 2D topological insulator material that is promising for spintronics applications.

Bismuthene-film conductive edge microscope image

To create this material, the researchers used a single-sheet of bismuth atomsdeposited on a silicon carbide substrate. The silicon carbide structures causes the bismuth atoms to arrange in a honeycomb structure - which resembles the structure of graphene films. The researchers call their new material "bismuthene".

Researchers develop graphene-based room-temperature spin field-effect transistor

Jul 09, 2017

Researchers from Chalmers University developed a new graphene-based room-temperature spin field-effect transistor (G-FET).

Graphene spintronics FETs image

As part of the research, it was demonstrated that the spin characteristics of graphene can be electrically regulated in a controlled way, even at an ambient temperature. This structure is not only useful to make spin-logic devices - it can also be used to integrate device-level magnetic memory (MRAM) elements.

Researchers manage to generate and manipulate the surface spin current in topological insulators

Jul 01, 2017

Researcherrs from Likoping University in Sweden demonstrated a method to generate and manipulate the surface spin current in topological insulators.

Transferring spin-oriented electrons (Linkoping)

The researchers used a combination of a topological insulator (Bismuth Telluride, Bi2Te3) and a regular GaAs semiconductor. The electroncs were generated with the same spin in the GaAs using polarized light. The electrons were then transferred to the TI.

Researchers synthesize a new 2D topological insulator

Jun 30, 2017

Researchers from Berkeley Lab and UC Berkeley synthesized a new 2D topological insulator material, called 1T’-WTe2. In such a material the flow of electrons is completely linked to the direction of their spin, and is limited to the edge of the material.

Berkeley Labs ALS 1T-WTe2 image

This material excites the scientists as they see great spintronics applications of 2D topological insulators. The researchers now aim to synthesize larger samples and find out the way to selectively adjust and emphasize particular characteristics