Reversible manipulation of the magnetic state in SrRuO3 through electric-field controlled proton evolution.
Zhuolu Li,Shengchun Shen,Zijun Tian,Kyle Hwangbo,Meng Wang,Yujia Wang,F. Michael Bartram,Liqun He,Yingjie Lyu,Yongqi Dong,Yongqi Dong,Gang Wan,Hao-Bo Li,Nianpeng Lu,Nianpeng Lu,Jiadong Zang,Hua Zhou,Elke Arenholz,Qing He,Luyi Yang,Luyi Yang,Weidong Luo,Pu Yu,Pu Yu +23 more
TLDR
Electric-field controlled protonation in SrRuO3 is reported, resulting in a large structural expansion and a ferromagnetic-to-paramagnetic phase transition, and a novel protonated compound of HSrRu O3 with paramagnetic metallic as ground state is revealed.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.read more
Citations
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Recent Progress on Topological Structures in Ferroic Thin Films and Heterostructures
Shanquan Chen,Shuai Yuan,Zhipeng Hou,Yun-Long Tang,Jinping Zhang,Tao Wang,Kang Li,Weiwei Zhao,Xingjun Liu,Lang Chen,Lane W. Martin,Lane W. Martin,Zuhuang Chen +12 more
TL;DR: Progress over the last decade in the study of topological structures in ferroic thin films and heterostructures is explored, including the observation of topology structures and control of their structures and emergent physical phenomena through epitaxial strain, layer thickness, electric, magnetic fields, etc.
Journal ArticleDOI
Defects in complex oxide thin films for electronics and energy applications: challenges and opportunities
TL;DR: In this paper, the authors provide an overview on recent progress in tuning the functional properties of complex transition-metal oxides via defect engineering, including types of defects and their effects on local atomic structure, electron configurations and electronic structure.
Journal ArticleDOI
Berry phase engineering at oxide interfaces
Dirk J. Groenendijk,Carmine Autieri,T. C. van Thiel,Wojciech Brzezicki,J. R. Hortensius,D. Afanasiev,Nicolas Gauquelin,Paolo Barone,K.H.W. van den Bos,S. Van Aert,Jo Verbeeck,Alessio Filippetti,Silvia Picozzi,Mario Cuoco,Andrea D. Caviglia +14 more
TL;DR: In this article, the emergence of topologically non-trivial bands in an ultrathin ferromagnet was demonstrated, and the resulting competition between bands with opposite Berry phases was theoretically and experimentally shown to be tunable by creating interfaces with other materials.
Journal ArticleDOI
Two-channel anomalous Hall effect in SrRuO3
Graham Kimbell,Paul M. Sass,Bart Woltjes,Eun Kyo Ko,Tae Won Noh,Weida Wu,Jason W. A. Robinson +6 more
TL;DR: The anomalous Hall effect in thin films near the thickness limit for ferromagnetism has been attributed to two-dimensional skyrmions in the film around the coercive field.
References
More filters
Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
Journal ArticleDOI
From ultrasoft pseudopotentials to the projector augmented-wave method
Georg Kresse,Daniel P. Joubert +1 more
TL;DR: In this paper, the formal relationship between US Vanderbilt-type pseudopotentials and Blochl's projector augmented wave (PAW) method is derived and the Hamilton operator, the forces, and the stress tensor are derived for this modified PAW functional.
Journal ArticleDOI
Self-Consistent Equations Including Exchange and Correlation Effects
Walter Kohn,L. J. Sham +1 more
TL;DR: In this paper, the Hartree and Hartree-Fock equations are applied to a uniform electron gas, where the exchange and correlation portions of the chemical potential of the gas are used as additional effective potentials.
Journal ArticleDOI
Inhomogeneous Electron Gas
P. C. Hohenberg,Walter Kohn +1 more
TL;DR: In this article, the ground state of an interacting electron gas in an external potential was investigated and it was proved that there exists a universal functional of the density, called F[n(mathrm{r})], independent of the potential of the electron gas.