Topic
Colossal magnetoresistance
About: Colossal magnetoresistance is a research topic. Over the lifetime, 3658 publications have been published within this topic receiving 130104 citations.
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TL;DR: In this article, an oxide heterostructure has been fabricated by successively growing La 0.7 Sr 0.3 MnO 3 layers on LaAlO 3 (100) by pulsed laser deposition.
24 citations
TL;DR: The magnetic, transport and magnetoresistive properties of La 1 - x Ca x MnO 3 (x ≈ 0.33 ) crystals prepared by the floating-zone method are studied in this article.
Abstract: The magnetic, transport and magnetoresistive properties of La 1 - x Ca x MnO 3 ( x ≈ 0.33 ) crystals prepared by the floating-zone method are studied. In general, these properties testify to rather good crystal perfection of the sample studied. In particular, a huge magnetoresistance ( [ R ( 0 ) - R ( H ) ] / R ( H ) in the field H = 5 T is about ≈ 2680 % ) is found near the Curie temperature (216 K). At the same time, some distinct features of measured properties indicate the influence of extrinsic inhomogeneities arising due to technological factors in the sample preparation. Analysis of the data obtained shows that these are rare grain boundaries and twins.
24 citations
TL;DR: In this article, the microstructure and magnetoresistance properties of polycrystalline La 0.67 Ca 0.3 were systematically investigated as a function of V-doping level.
24 citations
TL;DR: In this article, the role of in-plane uniaxial magnetic anisotropy in the magnetoresistance was investigated on (110)La0.7Sr0.3MnO3 thin films.
Abstract: We have performed magnetization and magnetoresistance measurements on (110)La0.7Sr0.3MnO3 thin films in order to understand the role of in-plane uniaxial magnetic anisotropy in the magnetoresistance. Transport measurements with current flowing along the magnetically easy [001] and magnetically hard [110] directions exhibit a linear dependence of magnetoresistance on field at high fields due to bulk colossal magnetoresistance. The low field behavior depends not only on the angle of the magnetization with the current but also the direction of the current in the crystal.
24 citations
TL;DR: In this paper, the Mott-like system Ca3Ru2O7 at high magnetic fields, B, up to 30 T was investigated and a rich and highly anisotropic phase diagram was revealed, where applying B along the a-, b-, and c-axis leads to vastly different behavior.
Abstract: We report recent transport and thermodynamic experiments over a wide range of temperatures for the Mott-like system Ca3Ru2O7 at high magnetic fields, B, up to 30 T. This work reveals a rich and highly anisotropic phase diagram, where applying B along the a-, b-, and c-axis leads to vastly different behavior. A fully spin-polarized state via a first order metamagnetic transition is obtained for B||a, and colossal magnetoresistance is seen for B||b, and quantum oscillations in the resistivity are observed for B||c, respectively. The interplay of the lattice, orbital and spin degrees of freedom are believed to give rise to this strongly anisotropic behavior.
24 citations