Large, Controllable Spikes of Magnetoresistance in La2/3Ca1/3MnO3/SrTiO3 Superlattices
Author
Fedoseev, SA; Pan, AV; Rubanov, S; Golovchanskiy, IA; Shcherbakova, OVDate
2013-01-01Source Title
ACS NANOPublisher
AMER CHEMICAL SOCUniversity of Melbourne Author/s
Rubanov, SergeyAffiliation
Bio21 InstituteMetadata
Show full item recordDocument Type
Journal ArticleCitations
Fedoseev, S. A., Pan, A. V., Rubanov, S., Golovchanskiy, I. A. & Shcherbakova, O. V. (2013). Large, Controllable Spikes of Magnetoresistance in La2/3Ca1/3MnO3/SrTiO3 Superlattices. ACS NANO, 7 (1), pp.286-293. https://doi.org/10.1021/nn304127n.Access Status
This item is currently not available from this repositoryDescription
C1 - Journal Articles Refereed
Abstract
We have investigated superlattices consisting of up to 30 epitaxial nanomultilayers (3-7 nm thick) of ferromagnetic La(2/3)Ca(1/3)MnO(3) (LCMO) and insulating SrTiO(3) (STO) hybrids. The superlattices demonstrate dramatic shifts of Curie temperature, indicating the possibility of its tunability. The metal-insulator transition (MIT) has been observed around 140 K. Below the MIT temperature, the superlattices have shown sharp drops of resistivity, facilitating the largest and sharpest magnetoresistance peaks (>2000%) ever observed in LCMO films and superlattices at low temperatures. The observed experimental results can be explained in the frame of the phase separation model in manganites with well-organized structures. The results of magnetic and transport measurements of such hybrid structures are discussed, indicating a magnetodielectric effect in STO interlayers. The magnetic and transport properties of the superlattices are shown to be technology-dependent, experiencing dimensional transitions, which enables the creation of structures with prescribed magnetoresistance characteristics for a broad range of applications.
Keywords
Surfaces and Structural Properties of Condensed Matter; Expanding Knowledge in the Physical SciencesExport Reference in RIS Format
Endnote
- Click on "Export Reference in RIS Format" and choose "open with... Endnote".
Refworks
- Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References
Collections
- Minerva Elements Records [53102]
- Bio21 - Research Publications [308]