Magnetization controlled at picosecond intervals

[unable to retrieve full-text content]A terahertz laser makes it possible to control a material's magnetization at a timescale of picoseconds (0.000,000,000,001 seconds). In their experiment, the researchers shone extremely short light pulses from the laser onto a magnetic material, where the magnetic moments - "elementary magnets" - were all aligned in parallel. The light pulse's magnetic field was able to deflect the magnetic moments from their idle state in such a way that they exactly followed the change of the laser's magnetic field with only a minor delay.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/i9TnjBcRB-s/130811150605.htm

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