Oscillatory exchange coupling and positive magnetoresistance in epitaxial oxide heterostructures

K. R. Nikolaev, A. Yu Dobin, I. N. Krivorotov, W. K. Cooley, A. Bhattacharya, A. L. Kobrinskii, L. I. Glazman, R. M. Wentzovitch, E. Dan Dahlberg, A. M. Goldman

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Abstract

Heterostructures consisting of layers of a colossal magnetoresistance material separated by nonmagnetic metallic oxide spacers were grown by molecular beam epitaxy (MBE). Based on the obtained heterostructures, the magnetic interlayer coupling was taken into account. Further, the oscillatory dependence of the coupling strength on the spacer thickness was observed. Exchange coupling was described within the Ruderman-Kittel-Kasuya-Yosida (RKKY) model.

Original languageEnglish (US)
Pages (from-to)3728-3731
Number of pages4
JournalPhysical Review Letters
Volume85
Issue number17
DOIs
StatePublished - Oct 23 2000

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    Nikolaev, K. R., Dobin, A. Y., Krivorotov, I. N., Cooley, W. K., Bhattacharya, A., Kobrinskii, A. L., Glazman, L. I., Wentzovitch, R. M., Dan Dahlberg, E., & Goldman, A. M. (2000). Oscillatory exchange coupling and positive magnetoresistance in epitaxial oxide heterostructures. Physical Review Letters, 85(17), 3728-3731. https://doi.org/10.1103/PhysRevLett.85.3728