Journal ArticleDOI
Effect of pressure on the magnetoresistance of single crystal nd0.5sr0.36pb0.14mno3-delta
K. Khazeni,K. Khazeni,Y. X. Jia,Y. X. Jia,Li Lu,Li Lu,Vincent H. Crespi,Vincent H. Crespi,Marvin L. Cohen,Marvin L. Cohen,Alex Zettl,Alex Zettl +11 more
TLDR
The first high-pressure measurement of magnetoresistance in single crystal is performed, which rules out substrate-induced compressive strain as a source of enhanced magnetores resistance.Abstract:
To investigate the observed huge variations in magnetoresistance between different samples of manganite perovskites we have performed the first high-pressure measurement of magnetoresistance in single crystal Nd{sub 0.5}Sr{sub 0.36}Pb{sub 0.14}MnO{sub 3{minus}{delta}}. Both resistivity and magnetoresistance are strongly suppressed upon application of pressure. The decrease in magnetoresistance with increasing pressure rules out substrate-induced compressive strain as a source of enhanced magnetoresistance. Instead, the magnetoresistance differences between samples are ascribed primarily to the more abrupt nature of the semiconductorlike to metallic phase transition at lower temperatures. {copyright} {ital 1996 The American Physical Society.}read more
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Percolative phase separation underlies colossal magnetoresistance in mixed-valent manganites
Masatomo Uehara,Masatomo Uehara,Shigeo Mori,Shigeo Mori,Shigeo Mori,Cheng-Hsuan Chen,Cheng-Hsuan Chen,Sang-Wook Cheong,Sang-Wook Cheong,Sang-Wook Cheong +9 more
TL;DR: In this article, it was shown that the magnetoresistive response increases dramatically when the Curie temperature (T C) is reduced, and that the massive magnetoresistance in low-T C systems can be explained by percolative transport through the ferromagnetic domains; this depends sensitively on the relative spin orientation of adjacent magnetoric domains which can be controlled by applied magnetic fields.
Journal ArticleDOI
REVIEW ARTICLE: Colossal magnetoresistance
TL;DR: In this paper, the authors review recent experimental work falling under the broad classification of colossal magnetoresistance (CMR), which is magnetoreduction associated with a ferromagnetic-toparamagnetic phase transition.
Journal ArticleDOI
Lattice effects in magnetoresistive manganese perovskites
TL;DR: The discovery of magnetoresistive responses in a class of metallic manganese oxides has raised hopes that these compounds might be of practical utility as mentioned in this paper. But regardless of whether this promise is realized, these materials provide an ideal system in which to elucidate the properties of metals in which electron-lattice interactions play a key role.
Journal ArticleDOI
Large magnetoresistance in non-magnetic silver chalcogenides
R. Xu,R. Xu,A. Husmann,Thomas Rosenbaum,Marie-Louise Saboungi,J. E. Enderby,Peter B. Littlewood +6 more
TL;DR: In this paper, the authors describe a novel class of magnetoresistive compounds, the silver chalcogenides, and show that slightly altering the stoichiometry can lead to a marked increase in the magnetic response.
Journal ArticleDOI
Colossal-magnetoresistance materials: manganites and conventional ferromagnetic semiconductors
TL;DR: In this article, experimental data and their theoretical interpretation are presented for the colossal magnetoresistance (CMR) materials to which conventional ferromagnetic semiconductors and manganites belong.