Exposing this quantum dot to one photon creates an electron-hole pair known as an exciton (yellow arrow), causing manganese impurities (gray arrows) to line up at room temperature.
In a breakthrough for spintronicsresearch that aims to use the magnetic moments of electrons to process informationscientists have discovered that chemically prepared, impurity-laced quantum dots can spontaneously line up their magnetic fields with the application of light. Notably, this process can occur at up to room temperature.
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