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Not just a load of bolometers

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  • Neil Mathur

    (University of Cambridge)

Abstract

The electrical resistance of certain materials changes enormously in a magnetic field. It has been hard to explain the magnitude of this 'colossal magnetoresistance'; but now in one group of materials — the cubic manganese perovskites — a partial explanation may have been found. In the conducting state, there is a sea of electrons, much as there is in a metal; in the high-resistance state, the current-carrying electrons are localized at atomic sites. Current can still flow, but the movement of electrons causes a physical distortion, and it appears to be this distortion that makes the resistance so high.

Suggested Citation

  • Neil Mathur, 1997. "Not just a load of bolometers," Nature, Nature, vol. 390(6657), pages 229-231, November.
    • Handle: RePEc:nat:nature:v:390:y:1997:i:6657:d:10.1038_36728
    DOI: 10.1038/36728
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