Thought for the month

“As I grow older, I pay less attention to what men say. I just watch what they do.” Andrew Carnegie, businessman and philanthropist (1835-1919).

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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