Ferromagnetism and conductivity in atomically thin SrRuO3

• Main Authors: Boschker, H., Harada, T., Asaba, T., Ashoori, R., Boris, A. V., Hilgenkamp, H., Hughes, C. R., Holtz, M. E., Li, L., Muller, D. A., Nair, H., Reith, P., Schlom, D. G., Soukiassian, A., Mannhart, J., Wang, Renshaw Xiao
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2019
• Subjects: Condensed Matter Physics; Engineering::Electrical and electronic engineering; Magnetism
• Online Access: https://hdl.handle.net/10356/90041; http://hdl.handle.net/10220/49352
• Institution: Nanyang Technological University

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.