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: It is found that, even when the magnetization is saturated, the resistance increases with increasing the magnetic-field strength, which is attributed to the Hanle magnetoresistance in this system.
Abstract: We report the observation of magnetoresistance originating from Rashba spin-orbit coupling (SOC) in a metallic heterostructure: the Rashba-Edelstein (RE) magnetoresistance. We show that the simultaneous action of the direct and inverse RE effects in a $\mathrm{Bi}/\mathrm{Ag}/\mathrm{CoFeB}$ trilayer couples current-induced spin accumulation to the electric resistance. The electric resistance changes with the magnetic-field angle, reminiscent of the spin Hall magnetoresistance, despite the fact that bulk SOC is not responsible for the magnetoresistance. We further found that, even when the magnetization is saturated, the resistance increases with increasing the magnetic-field strength, which is attributed to the Hanle magnetoresistance in this system.
116 citations
TL;DR: In this paper, magnetic and magnetotransport experimental data in well-characterized small particles of La 0.67 Ca 0.33 MnO 3 are presented, and low-temperature resistivity upturn present in small particle size samples can be understood in terms of an electrostatic barrier between grains.
116 citations
115 citations
TL;DR: In this paper, Rao and Cheetham discuss magnetoresistance in perovskite manganates, where the effect is unusually strong and this understanding is driving the search for new materials with even more impressive properties.
Abstract: Some materials exhibit large changes in electrical resistance in the presence of a magnetic field, and this change can be used in applications from sensor technology to magnetic data storage. In their Perspective, Rao and Cheetham discuss magnetoresistance in perovskite manganates, where the effect is unusually strong. Much has been learned about these materials, and this understanding is driving the search for new materials with even more impressive properties.
115 citations
TL;DR: In this article, an enhancement of the magnetocaloric effect has been obtained in the samples with Nd3+ dopant (for La 0.3MnO3, the maximum of ΔSM is about −2.31 J/kg
Abstract: In perovskite manganites La0.7−xNdxCa0.3MnO3 (x=0, 0.05, 0.1, 0.15, and 0.20) prepared by the sol–gel technique, large magnetocaloric effects have been observed. The maximum of the magnetic entropy change peaks at the magnetic ordering temperature. Compared to La0.7Ca0.3MnO3, an enhancement of the magnetocaloric effect has been obtained in the samples with Nd3+ dopant (for La0.5Nd0.2Ca0.3MnO3, the maximum of ΔSM is about −2.31 J/kg K).
114 citations