Science Daily August 19, 2020
Special metal oxides could one day replace semiconductor materials that are commonly used today in processors. Until recently it had not been clear how the electron transfer across the band gap coupled with the spin of the magnetic oxide occurs. An international team of researchers (Germany, USA – research institute, Switzerland) was able to excite an electron to lift it across the band gap in nickel oxide. They also observed how the information was then transferred to the magnetic system. This enabled the team to identify a previously unknown ultrafast coupling mechanism that occurs on a femtosecond scale. The findings pave the way for ultrafast spintronics. This should facilitate the development of new ultra-fast storage systems and information technologies in the future…read more. Open Access TECHNICAL ARTICLE
Two-photon photoemission of NiO. Credit: Nature Communications volume 11, Article number: 4095 (2020)