Berlin 2018 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 14: INNOMAG e.V. Dissertationspreis 2018 / Ph.D. Thesis Prize

MA 14.3: Hauptvortrag

Montag, 12. März 2018, 15:50–16:15, H 0112

Ferromagnet-Free Magnetoelectric Thin Film Elements — •Tobias Kosub — Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials Research, Dresden, Germany

Thin film spintronic elements could complement conventional electronic computing in the future in applications such as high efficiency data processing. Magnetoelectric antiferromagnets are attractive for two reasons: First, they allow electric field actuation of magnetic state changes. This is more energy efficient than charge current based manipulation because the latter is accompanied by conduction losses. Second, antiferromagnets offer intrinsic robustness against magnetic stray fields and potentially picosecond addressability.

This thesis encompasses the design, development, realization and testing of novel magnetoelectric thin film elements that do not rely on ferromagnets, but are based entirely on magnetoelectric antiferromagnets such as Cr₂O₃ [1]. Using a new electrical measurement scheme [2], a purely antiferromagnetic memory prototype is demonstrated, which greatly exceeds the performance of conventional counterparts based on ferromagnets.

[1] T. Kosub et al., Nature Commun. 8, 13985 (2017).

[2] T. Kosub et al., Phys. Rev. Lett. 115, 097201 (2015).