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1996

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August

  

Reviews of topical problems


Lanthanum manganites and other giant-magnetoresistance magnetic conductors


Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Kaluzhskoe shosse 14, Troitsk, Moscow, 108840, Russian Federation

A review is given of crystallographic, magnetic and electric properties of lanthanum manganites and related materials with a giant magnetoresistance (GMR). An analysis of experimental data for partially substituted manganites shows that if the spontaneous magnetic moment is unsaturated, the material is being in a phase-separated ferro-antiferromagnetic state. One possible GMR mechanism consists in a change of such a state under the magnetic field. If the magnetic moment of these materials is saturated, they display a resistivity peak in the vicinity of the Curie point. It is caused by the interaction of the charge carriers with spatial fluctuations of the electric potential and local magnetization. Suppression of this peak by the magnetic field leads to a GMR in ferromagnetic conductors.

Fulltext pdf (848 KB)
Fulltext is also available at DOI: 10.1070/PU1996v039n08ABEH000161
PACS: 75.90.+w
DOI: 10.1070/PU1996v039n08ABEH000161
URL: https://ufn.ru/en/articles/1996/8/b/
A1996VH30900002
Citation: Nagaev E L "Lanthanum manganites and other giant-magnetoresistance magnetic conductors" Phys. Usp. 39 781–805 (1996)
BibTexBibNote ® (generic) BibNote ® (RIS)MedlineRefWorks
TY JOUR
TI Lanthanum manganites and other giant-magnetoresistance magnetic conductors
AU Nagaev, E. L.
PB Physics-Uspekhi
PY 1996
JO Physics-Uspekhi
JF Physics-Uspekhi
JA Phys. Usp.
VL 39
IS 8
SP 781-805
UR https://ufn.ru/en/articles/1996/8/b/
ER https://doi.org/10.1070/PU1996v039n08ABEH000161

Оригинал: Нагаев Э Л «Манганиты лантана и другие магнитные проводники с гигантским магнитосопротивлением» УФН 166 833–858 (1996); DOI: 10.3367/UFNr.0166.199608b.0833

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