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The giant magnetoresistance effect is a quantum phenomenon in what type of materials?

  • Insulators

  • Superconductors

  • Semiconductors

  • Magnetic thin films

Answer

The giant magnetoresistance (GMR) effect is a phenomenon exhibited in magnetic thin films, where the electrical resistance of the material changes significantly in the presence of a magnetic field. This effect arises from the spin-dependent scattering of conduction electrons at the interfaces between ferromagnetic and non-magnetic layers within the thin film.
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