The first breakthrough was discovering a phenomenon known as giant magnetoresistance.

The third alternative, based on giant magnetoresistance, has been present on the market since 2002 in limited quantities.

It should not be confused with Giant Magnetoresistance, which is a totally different physical phenomenon.

He discovered giant magnetoresistance which was used to make gigabyte hard disks much easier to build.

Be it why DNA elongates when twisted tighter or giant magnetoresistance.

But we can store and access ever-increasing amounts of data on ever-smaller devices because of giant magnetoresistance.

The most common applications of this effect involve giant magnetoresistance (GMR) devices.

Giant magnetoresistance (physics)

Giant magnetoresistance (GMR) is a very small magnetic effect found in thin layers of iron and other materials.

For instance, a spin phenomenon known as giant magnetoresistance has been tapped by I.B.M. to try to improve computer disk drives.

He also investigated the spin and giant magnetoresistance properties of the narrow gap III-V compounds.

Magnetocouplers uses giant magnetoresistance (GMR) to couple from AC down to DC.

Professor Grünberg won the 2007 Nobel Prize in Physics for his discovery of giant magnetoresistance which made gigabyte hard disk drives easier to produce.

Half the prize was given to Albert Fert who discovered giant magnetoresistance at the same time but Fert and Grünberg did not work together.

In literature, the term giant magnetoresistance, is sometimes confused with colossal magnetoresistance of ferromagnetic and antiferromagnetic semiconductors, which is not related to the multilayer structure.

While the device operated in a diffusive regime the constrictions would pin domain walls, resulting in a giant magnetoresistance (GMR) signal.

In 1988 Fert discovered the Giant magnetoresistance effect (GMR) in multilayers of iron and chromium.

Spintronics is already a billion-dollar industry because of another I.B.M. innovation based on a phenomenon known as "giant magnetoresistance," which is being used to read hard disks.

The term "giant magnetoresistance" indicates that the value Δ for multilayer structures significantly exceeds the anisotropic magnetoresistance, which has a typical value within a few percent.

Perhaps the most significant application of the RKKY theory has been to the theory of giant magnetoresistance (GMR).

Albert Fert (born 7 March 1938) is a French physicist and one of the discoverers of giant magnetoresistance which brought about a breakthrough in gigabyte hard disks.

Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in thin-film structures composed of alternating ferromagnetic and non-magnetic conductive layers.

Its pioneering disk drive technology, for example, dates back to research on "giant magnetoresistance," a phenomenon first discovered in 1988 by French scientists at Universite Paris-Sud in Orsay.

Electrical resistance changed by up to 50% with the external magnetic field at 4.2 K. Fert named the new effect giant magnetoresistance, to highlight its difference with the anisotropic magnetoresistance.

In 1993, Thierry Valet and Albert Fert presented a model for the giant magnetoresistance in the CPP geometry, based on the Boltzmann equations.