= Albert Fert
{c}
{tag=Physicist}
{wiki}
= A. Fert
{c}
{synonym}
<Albert Fert> coauthored the discovery of <giant magnetoresistance> in alternating <iron> and <chromium> layers. In the 1988 measurements, a <magnetic field> of 2 <tesla (unit)> nearly halved the <electrical resistivity> of one thin-chromium sample at 4.2 <kelvin>. Spin-dependent <electron> transmission through the chromium layers explained why changing the magnetic arrangement changed the <electrical resistance> so strongly. The experiment made nanoscale layer structure and <electron> <spin> directly relevant to an easily measured electrical signal.<Giant Magnetoresistance of (001)Fe⁄(001)Cr Magnetic Superlattices by Mário Norberto Baibich and others>[Physical Review Letters 61, 2472 (1988), abstract]{ref}
A <physicist>.<Albert Fert, CNRS Gold Medal for 2003 by Claude Delhaye>[Independent professional identity]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Fert-002_(cropped).jpg?width=260]
{title=Portrait of <Albert Fert>}
{description=Jevillegas. https://creativecommons.org/licenses/by-sa/4.0/[CC BY-SA 4.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Fert-002_(cropped).jpg}
{width=260}
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