Interlayer coupling through a dimensionality-induced magnetic state

Gibert Gutierrez, Marta; Viret, Michel; Zubko, Pavlo; Jaouen, N.; Tonnerre, J.-M.; Torres-Pardo, A.; Catalano, Sara; Gloter, A.; Stéphan, O.; Triscone, Jean-Marc

doi:10.1038/ncomms11227

Scientific article

English

Interlayer coupling through a dimensionality-induced magnetic state

Contributors

Gibert Gutierrez, Marta; Viret, Michel; Zubko, Pavlo; Jaouen, N.; Tonnerre, J.-M.; Torres-Pardo, A.; Catalano, Sara; Gloter, A.; Stéphan, O.; Triscone, Jean-Marc

Published in

Nature communications, vol. 7, 11227

Publication date

2016

Abstract

Dimensionality is known to play an important role in many compounds for which ultrathin layers can behave very differently from the bulk. This is especially true for the paramagnetic metal LaNiO3, which can become insulating and magnetic when only a few monolayers thick. We show here that an induced antiferromagnetic order can be stabilized in the [111] direction by interfacial coupling to the insulating ferromagnet LaMnO3, and used to generate interlayer magnetic coupling of a nature that depends on the exact number of LaNiO3 monolayers. For 7-monolayer-thick LaNiO3/LaMnO3 superlattices, negative and positive exchange bias, as well as antiferromagnetic interlayer coupling are observed in different temperature windows. All three behaviours are explained based on the emergence of a (1/4 ,1/4,1/4)-wavevector antiferromagnetic structure in LaNiO3 and the presence of interface asymmetry with LaMnO3. This dimensionality-induced magnetic order can be used to tailor a broad range of magnetic properties in well-designed superlattice-based devices.

Keywords

Interface engineering
Nickelates
Magnetism
Exchange bias

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique de la matière quantique

UNIGE research groups

Groupe Triscone

Citation (ISO format)

GIBERT GUTIERREZ, Marta et al. Interlayer coupling through a dimensionality-induced magnetic state. In: Nature communications, 2016, vol. 7, p. 11227. doi: 10.1038/ncomms11227

Article (Published version)

Identifiers

PID : unige:84237
DOI : 10.1038/ncomms11227

Journal ISSN

2041-1723

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358downloads

Creation

03/06/2016 17:09:00

First validation

03/06/2016 17:09:00

Update

15/03/2023 00:25:13

Status update

15/03/2023 00:25:12

Last indexation

31/10/2024 03:34:42

Interlayer coupling through a dimensionality-induced magnetic state

Contributors

Published in

Publication date

Abstract

Keywords

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

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Journal ISSN

Technical informations

Creation

First validation

Update

Status update

Last indexation