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Tag: Colossal magnetoresistance

Magnetic structure in a colossal magneto-resistive manganite is switched from antiferromagnetic to ferromagnetic ordering during about 100 femtosecond (10^-15 s) laser pulse photo-excitation. With time so short and the laser pulses still interacting with magnetic moments, the magnetic switching is driven quantum mechanically– not thermally. This potentially opens the door to terahertz (10^12 hertz) and faster memory writing/reading speeds.(credit: DOE Ames Laboratory)

Terahertz-speed RAM and hard drives now possible through all-optical switching

Driven by technological demand to breach the gigahertz (10^9 hertz) switching speed limit of today’s magnetic memory and logic devices, a team of ...

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