Researchers from Shinshu University, the Chinese University of Hong Kong, the University of Tokyo, Tsinghua University, Kyoto University and Nanyang Technological University have experimentally demonstrated a breakthrough in manipulation of skyrmions using only electric field.
The team, led by Professor Xiaoxi Liu of Shinshu University, designed and fabricated magnetic multilayer films in the form of racetracks where the thickness of the films had a slope. They demonstrated that many skyrmion bubbles can be created and directionally displaced about 10 micrometres by applying a voltage as low as 9 volt in a repeatable manner. They also found that the domain wall displacement and velocity induced by the variation of electric field are proportional to the absolute value of voltage.
Researchers from Sultan Qaboos University in Oman, Johannes Gutenberg-UniversitÃ¤t Mainz in Germany and Nanyang Technological University in Singapore have experimentally demonstrated a breakthrough in one of the major problems blocking the adoption of magnetic domain wall memory.
When recording each fresh bit of information onto a racetrack, there is considerable uncertainty about where each magnetic domain starts and ends, and an incorrectly-written bit can easily lead to the corruption of bits. The team, led by Professor Rachid Sbiaa of Sultan Qaboos University, devised a method to overcome this difficulty by using a staggered nanowire (see figure below).
The US DARPA agency has published an interesting video that explains about its Spintronics research efforts, with current and format program managers and DARPA-funded industry researchers describe key historical events and DARPA research goals:
Perovskite materials offer exciting properties which make them useful for solar panels, fuel cells, lasers, displays and more. Many believe Perovskites are the future of solar power and some estimate that perovskite adoption is right around the corner. Our new video below gives a short introduction to perovskites:
Researchers from the EPFL managed to produce controllable and stable skyrmions using laser pulses. The scientists could write and erase skyrmions in less than a few hundred nanoseconds to a few microseconds.
To create the skyrmions, the researchers used iron-germanium alloy, which can offer skyrmions at about 0 degrees Celsius, very closet o room temperature. The ultra-short laser pulses create an ultra-fast temperature jump, and the super-cooling effect at the end of the jump restricts the place in which skyrmions exist - to places in which they do not exist normally.
Zeila Zanolli,a principal investigator at RWTH Aachen University and the European Theoretical Spectroscopy Facility (ETSF) gave a lecture at the MaX Conference on the Materials Design Ecosystem at the Exascale last month, titled "Spintronics at the interface".
Zeila specifically discusses the interface between Graphene and BaMnO3 materials.