Twinned-domain-induced magnonic modes in epitaxial LSMO/STO films
Wahlström, Erik; Macia, Ferran; Boschker, Jos Emiel; Monsen, Åsmund Fløystad; Nordblad, Per; Mathieu, Roland; Kent, Andrew D.; Tybell, Thomas
Journal article, Peer reviewed
Published version
Date
2017Metadata
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- Institutt for fysikk [2698]
- Publikasjoner fra CRIStin - NTNU [38278]
Original version
10.1088/1367-2630/aa70afAbstract
The use of periodic magnetic structures to control the magneto-dynamic properties of materials— magnonics—is a rapidly developing field. In the last decade, a number of studies have shown that metallic films can be patterned or combined in patterns that give rise to well-defined magnetization modes, which are formed due to band folding or band gap effects. To explore and utilize these effects in a wide frequency range, it is necessary to pattern samples at the sub-micrometer scale. However, it is still a major challenge to produce low-loss magnonic structures with periodicities at such length scales. Here, we show that for a prototypical perovskite, La0.7 Sr0.3 MnO3, the twinned structural order can be used to induce a magnetic modulation with a period smaller than 100 nm, demonstrating a bottomup approach for magnonic crystal growth.