Ferromagnetism and Conductivity in Atomically Thin SrRuO3

H. Boschker*, T. Harada, T. Asaba, R. Ashoori, A. V. Boris, H. Hilgenkamp, C. R. Hughes, M. E. Holtz, L. Li, D. A. Muller, H. Nair, P. Reith, X. Renshaw Wang, D. G. Schlom, A. Soukiassian, J. Mannhart

*Corresponding author for this work

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Abstract

Atomically thin ferromagnetic and conducting electron systems are highly desired for spintronics, because they can be controlled with both magnetic and electric fields. We present (SrRuO3)1-(SrTiO3)5 superlattices and single-unit-cell-thick SrRuO3 samples that are capped with SrTiO3. We achieve samples of exceptional quality. In these samples, the electron systems comprise only a single RuO2 plane. We observe conductivity down to 50 mK, a ferromagnetic state with a Curie temperature of 25 K, and signals of magnetism persisting up to approximately 100 K.

Original languageEnglish
Article number011027
JournalPhysical review X
Volume9
Issue number1
DOIs
Publication statusPublished - 8 Feb 2019

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    Boschker, H., Harada, T., Asaba, T., Ashoori, R., Boris, A. V., Hilgenkamp, H., ... Mannhart, J. (2019). Ferromagnetism and Conductivity in Atomically Thin SrRuO3. Physical review X, 9(1), [011027]. https://doi.org/10.1103/PhysRevX.9.011027