Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Non-volatile ionic modification of the Dzyaloshinskii Moriya Interaction

Abstract : The possibility to tune the Dzyaloshinskii Moriya interaction (DMI) by electric (E) field gating in ultra-thin magnetic materials has opened new perspectives in terms of controlling the stabilization of chiral spin structures. Most recent efforts have used voltage-induced charge redistribution at the interface between a metal and an oxide to modulate DMI. This approach is attractive for active devices but it tends to be volatile, making it energy demanding, and it is limited by Coulomb screening in the metal. Here we have demonstrated the non-volatile E-field manipulation of DMI by ionic liquid gating of Pt/Co/HfO2 ultra-thin films. The E-field effect on DMI scales with the E-field exposure time and is proposed to be linked to the migration and subsequent anchoring of oxygen species from the HfO2 layer into the Co and Pt layers. This effect permanently changes the properties of the material showing that E-fields can not only be used for local gating in devices but also as a highly scalable materials design tool for post-growth tuning of DMI.
Document type :
Journal articles
Complete list of metadata

Cited literature [50 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02331252
Contributor : Liza Herrera Diez Connect in order to contact the contributor
Submitted on : Thursday, October 24, 2019 - 12:28:57 PM
Last modification on : Sunday, June 26, 2022 - 12:12:35 PM
Long-term archiving on: : Saturday, January 25, 2020 - 2:41:16 PM

Identifiers

Citation

L. Herrera Diez, y Liu, D. Gilbert, M. Belmeguenai, Jan Vogel, et al.. Non-volatile ionic modification of the Dzyaloshinskii Moriya Interaction. Physical Review Applied, American Physical Society, 2019, 12 (3), pp.034005. ⟨10.1103/PhysRevApplied.12.034005⟩. ⟨hal-02331252⟩

Share

Metrics

Record views

89

Files downloads

128