Thought for the month

“The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact.”
Thomas Huxley, Scientist (1825-95).

Monday, 23 April 2012

Spin filter

A group at the Max Planck Institute of Microstructure Physics in Halle have presented interesting work on using ferroelectric tunnel junctions as spin filters. Based on a ferromagnetic lanthanum strontium manganate / ferroelectric lead zirconate titanite / ferromagnetic cobalt sandwich structure the group found that the tunnel magnetoresistance acts as both a variable resistance and an electron spin filter. The group see applications for the spin filter in magnetic storage devices including magnetic random access memories.

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