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Reversible manipulation of the magnetic state in SrRuO3 through electric-field controlled proton evolution

Li, Zhuolu; Shen, Shengchun; Tian, Zijun; Hwangbo, Kyle; Wang, Meng; Wang, Yujia; Bartram, F. Michael; He, Liqun; Lyu, Yingjie; Dong, Yongqi; Wan, Gang; Li, Haobo; Lu, Nianpeng; Zang, Jiadong; Zhou, Hua; Arenholz, Elke; He, Qing; Yang, Luyi; Luo, Weidong; Yu, Pu

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Authors

Zhuolu Li

Shengchun Shen

Zijun Tian

Kyle Hwangbo

Meng Wang

Yujia Wang

F. Michael Bartram

Yingjie Lyu

Yongqi Dong

Gang Wan

Haobo Li

Nianpeng Lu

Jiadong Zang

Hua Zhou

Elke Arenholz

Luyi Yang

Weidong Luo

Pu Yu



Abstract

Ionic substitution forms an essential pathway to manipulate the structural phase, carrier density and crystalline symmetry of materials via ion-electron-lattice coupling, leading to a rich spectrum of electronic states in strongly correlated systems. Using the ferromagnetic metal SrRuO3 as a model system, we demonstrate an efficient and reversible control of both structural and electronic phase transformations through the electric-field controlled proton evolution with ionic liquid gating. The insertion of protons results in a large structural expansion and increased carrier density, leading to an exotic ferromagnetic to paramagnetic phase transition. Importantly, we reveal a novel protonated compound of HSrRuO3 with paramagnetic metallic as ground state. We observe a topological Hall effect at the boundary of the phase transition due to the proton concentration gradient across the film-depth. We envision that electric-field controlled protonation opens up a pathway to explore novel electronic states and material functionalities in protonated material systems.

Citation

Li, Z., Shen, S., Tian, Z., Hwangbo, K., Wang, M., Wang, Y., …Yu, P. (2020). Reversible manipulation of the magnetic state in SrRuO3 through electric-field controlled proton evolution. Nature Communications, 11(1), Article 184. https://doi.org/10.1038/s41467-019-13999-1

Journal Article Type Article
Acceptance Date Nov 29, 2019
Online Publication Date Jan 20, 2020
Publication Date 2020
Deposit Date Jan 22, 2020
Publicly Available Date Jan 22, 2020
Journal Nature Communications
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 11
Issue 1
Article Number 184
DOI https://doi.org/10.1038/s41467-019-13999-1

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This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.





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