Ferromagnetic order of ultra-thin La&lt;sub&gt;0.7&lt;/sub&gt;Ba&lt;sub&gt;0.3&lt;/sub&gt;MnO&lt;sub&gt;3&lt;/sub&gt; sandwiched between SrRuO&lt;sub&gt;3&lt;/sub&gt; layers

Piamonteze, Cinthia; Bern, Francis; Avula, Sridhar Reddy Venkata; Studniarek, Michał; Autieri, Carmine; Ziese, Michael; Lindfors-Vrejoiu, Ionela

doi:10.1063/5.0043057

Ferromagnetic order of ultra-thin La_0.7Ba_0.3MnO₃ sandwiched between SrRuO₃ layers

Piamonteze C, Bern F, Avula SRV, Studniarek M, Autieri C, Ziese M & Lindfors-Vrejoiu I

Citation

Piamonteze, C., Bern, F., Avula, S. R. V., Studniarek, M., Autieri, C., Ziese, M., & Lindfors-Vrejoiu, I. (2021). Ferromagnetic order of ultra-thin La_0.7Ba_0.3MnO₃ sandwiched between SrRuO₃ layers. Applied Physics Letters, 118(15), 152408 (5 pp.). https://doi.org/10.1063/5.0043057

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:37412

We demonstrate the stability of ferromagnetic order of one unit cell thick optimally doped manganite (La_0.7Ba_0.3MnO₃, LBMO) epitaxially grown between two layers of SrRuO₃ (SRO) by using x-ray magnetic circular dichroism. At low temperature, LBMO shows an inverted hysteresis loop due to the strong antiferromagnetic coupling to SRO. Moreover, above SRO TC, manganite still exhibits magnetic remanence. Density Functional Theory calculations show that coherent interfaces of LBMO with SRO hinder electronic confinement and the strong magnetic coupling enables the increase in the LBMO TC. From the structural point of view, interfacing with SRO enables LBMO to have octahedral rotations similar to bulk. All these factors jointly contribute for stable ferromagnetism up to 130 K for a one unit cell LBMO film.

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Journal Article

Title

Ferromagnetic order of ultra-thin La_0.7Ba_0.3MnO₃ sandwiched between SrRuO₃ layers

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