Interfacial Symmetry Control of Emergent Ferromagnetism at the Nanoscale

Published

September 14, 2016

Author(s)

Alexander J. Grutter, A. Vailionis, Julie A. Borchers, Brian J. Kirby, C. L. Flint, C. He, E. Arenholz, Y. Suzuki

Abstract

We demonstrate tunable switching between ferromagnetic and antiferromagnetic order at the CaRuO₃/CaMnO₃ interface that originates from symmetry differences in the tilt and rotation of the oxygen octahedra across the boundary. Interfaces which are symmetry-matched across the boundary exhibit interfacial CaMnO₃ ferromagnetism while the ferromagnetism at symmetry-mismatched interfaces is suppressed. Thus, interfacial symmetry differences inhibit the formation of emergent of antiferromagnetic order, and we find CaMnO₃ antiferromagnetic correlation lengths which far exceed the thickness of an individual CaMnO₃ layer, extending through several nominal paramagnetic spacers.

Citation

Nano Letters

Volume

16

Issue

9

Pub Type

Journals

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Keywords

Magnetism, Oxide, Perovskite, Film, Symmetry, Interface

Citation

Grutter, A. , Vailionis, A. , Borchers, J. , Kirby, B. , , C. , He, C. , Arenholz, E. and Suzuki, Y. (2016), Interfacial Symmetry Control of Emergent Ferromagnetism at the Nanoscale, Nano Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=919817 (Accessed April 18, 2024)