edoc

Purely antiferromagnetic magnetoelectric random access memory

Kosub, Tobias and Kopte, Martin and Hühne, Ruben and Appel, Patrick and Shields, Brendan and Maletinsky, Patrick and Hübner, René and Liedke, Maciej Oskar and Fassbender, Jürgen and Schmidt, Oliver G.. (2017) Purely antiferromagnetic magnetoelectric random access memory. Nature Communications, 8. p. 13985.

[img]
Preview
PDF - Published Version
Available under License CC BY (Attribution).

999Kb

Official URL: https://edoc.unibas.ch/59554/

Downloads: Statistics Overview

Abstract

Magnetic random access memory schemes employing magnetoelectric coupling to write binary information promise outstanding energy efficiency. We propose and demonstrate a purely antiferromagnetic magnetoelectric random access memory (AF-MERAM) that offers a remarkable 50-fold reduction of the writing threshold compared with ferromagnet-based counterparts, is robust against magnetic disturbances and exhibits no ferromagnetic hysteresis losses. Using the magnetoelectric antiferromagnet Cr 2 O 3 , we demonstrate reliable isothermal switching via gate voltage pulses and all-electric readout at room temperature. As no ferromagnetic component is present in the system, the writing magnetic field does not need to be pulsed for readout, allowing permanent magnets to be used. Based on our prototypes, we construct a comprehensive model of the magnetoelectric selection mechanisms in thin films of magnetoelectric antiferromagnets, revealing misfit induced ferrimagnetism as an important factor. Beyond memory applications, the AF-MERAM concept introduces a general all-electric interface for antiferromagnets and should find wide applicability in antiferromagnetic spintronics.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Georg H. Endress-Stiftungsprofessur für Experimentalphysik (Maletinsky)
UniBasel Contributors:Maletinsky, Patrick M.
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Nature Publishing Group
e-ISSN:2041-1723
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:31 Jan 2018 10:45
Deposited On:31 Jan 2018 10:45

Repository Staff Only: item control page