Phys.org July 12, 2022 An international team of researchers (Germany, Spain, USA – research organization) has demonstrated how the coupling between intense lasers, the motion of electrons, and their spin influences the emission of light on the ultrafast timescale. They demonstrated how changes in the electron velocity can affect the electron dynamics in Na3Bi and that this effect can sometimes be detrimental to the generation of high-order harmonics. While this material is non-magnetic, the team has shown that the spin of the electrons is important for the dynamics, as it couples to the potential felt by the electrons, which is […]
Tag Archives: Magnetization
Magnetic spins that ‘freeze’ when heated: Nature in the wrong direction
Nanowerk July 4, 2022 An international team of researchers (the Netherlands, Sweden) observed an unusual magnetic transition in elemental neodymium where, with increasing temperature, long-range multiply periodic ‘multi-Q’ magnetic order emerged from a self-induced spin glass. They characterized the local order of a previously reported spin glass phase and quantified the emergence of long-range multi-Q order with increasing temperature. Using the analysis tools they developed, they determined the glass transition temperature from measurements of the spatially dependent magnetization. They compared these observations with atomistic spin dynamics simulations to reproduce the qualitative observation of a phase transition from a low-temperature spin […]