Chemically induced Jahn-Teller ordering on manganite surfaces

Zheng Gai; Wenzhi Lin; J. D. Burton; K. Fuchigami; P. C. Snijders; T. Z. Ward; Evgeny Y. Tsymbal; J. Shen; Stephen Jesse; Sergei V. Kalinin; Arthur P. Baddorf

doi:10.1038/ncomms5528

Chemically induced Jahn-Teller ordering on manganite surfaces

Zheng Gai, Wenzhi Lin, J. D. Burton, K. Fuchigami, P. C. Snijders, T. Z. Ward, Evgeny Y. Tsymbal, J. Shen, Stephen Jesse, Sergei V. Kalinin, Arthur P. Baddorf

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Physical and electrochemical phenomena at the surfaces of transition metal oxides and their coupling to local functionality remains one of the enigmas of condensed matter physics. Understanding the emergent physical phenomena at surfaces requires the capability to probe the local composition, map order parameter fields and establish their coupling to electronic properties. Here we demonstrate that measuring the sub-30-pm displacements of atoms from high-symmetry positions in the atomically resolved scanning tunnelling microscopy allows the physical order parameter fields to be visualized in real space on the single-atom level. Here, this local crystallographic analysis is applied to the in-situ-grown manganite surfaces. In particular, using direct bond-angle mapping we report direct observation of structural domains on manganite surfaces, and trace their origin to surface-chemistry-induced stabilization of ordered Jahn-Teller displacements. Density functional calculations provide insight into the intriguing interplay between the various degrees of freedom now resolved on the atomic level.

Original language	English
Article number	4528
Journal	Nature Communications
Volume	5
DOIs	https://doi.org/10.1038/ncomms5528
State	Published - Jul 24 2014

Funding

Research was supported in part (W.L., S.V.K., K.F., P.C.S., T.Z.W.) by the US Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division. This research was in part conducted and supported (Z.G., S.J., A.P.B.) at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. The work at the University of Nebraska-Lincoln (J.D.B., E.Y.T.) was supported by NSF MRSEC (Grant No. DMR-0820521) and NSF EPSCoR (Grant No. EPS-1010674). Computations were performed at the UNL Holland Computing Center.

Funders	Funder number
Center for Nanophase Materials Sciences
NSF MRSEC	DMR-0820521
Office of Basic Energy Sciences
Scientific User Facilities Division
US Department of Energy
Basic Energy Sciences
Oak Ridge National Laboratory
University of Nebraska-Lincoln
Division of Materials Sciences and Engineering
Kansas NSF EPSCoR

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title = "Chemically induced Jahn-Teller ordering on manganite surfaces",

abstract = "Physical and electrochemical phenomena at the surfaces of transition metal oxides and their coupling to local functionality remains one of the enigmas of condensed matter physics. Understanding the emergent physical phenomena at surfaces requires the capability to probe the local composition, map order parameter fields and establish their coupling to electronic properties. Here we demonstrate that measuring the sub-30-pm displacements of atoms from high-symmetry positions in the atomically resolved scanning tunnelling microscopy allows the physical order parameter fields to be visualized in real space on the single-atom level. Here, this local crystallographic analysis is applied to the in-situ-grown manganite surfaces. In particular, using direct bond-angle mapping we report direct observation of structural domains on manganite surfaces, and trace their origin to surface-chemistry-induced stabilization of ordered Jahn-Teller displacements. Density functional calculations provide insight into the intriguing interplay between the various degrees of freedom now resolved on the atomic level.",

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AU - Gai, Zheng

AU - Lin, Wenzhi

AU - Burton, J. D.

AU - Fuchigami, K.

AU - Snijders, P. C.

AU - Ward, T. Z.

AU - Tsymbal, Evgeny Y.

AU - Shen, J.

AU - Jesse, Stephen

AU - Kalinin, Sergei V.

AU - Baddorf, Arthur P.

PY - 2014/7/24

Y1 - 2014/7/24

N2 - Physical and electrochemical phenomena at the surfaces of transition metal oxides and their coupling to local functionality remains one of the enigmas of condensed matter physics. Understanding the emergent physical phenomena at surfaces requires the capability to probe the local composition, map order parameter fields and establish their coupling to electronic properties. Here we demonstrate that measuring the sub-30-pm displacements of atoms from high-symmetry positions in the atomically resolved scanning tunnelling microscopy allows the physical order parameter fields to be visualized in real space on the single-atom level. Here, this local crystallographic analysis is applied to the in-situ-grown manganite surfaces. In particular, using direct bond-angle mapping we report direct observation of structural domains on manganite surfaces, and trace their origin to surface-chemistry-induced stabilization of ordered Jahn-Teller displacements. Density functional calculations provide insight into the intriguing interplay between the various degrees of freedom now resolved on the atomic level.

AB - Physical and electrochemical phenomena at the surfaces of transition metal oxides and their coupling to local functionality remains one of the enigmas of condensed matter physics. Understanding the emergent physical phenomena at surfaces requires the capability to probe the local composition, map order parameter fields and establish their coupling to electronic properties. Here we demonstrate that measuring the sub-30-pm displacements of atoms from high-symmetry positions in the atomically resolved scanning tunnelling microscopy allows the physical order parameter fields to be visualized in real space on the single-atom level. Here, this local crystallographic analysis is applied to the in-situ-grown manganite surfaces. In particular, using direct bond-angle mapping we report direct observation of structural domains on manganite surfaces, and trace their origin to surface-chemistry-induced stabilization of ordered Jahn-Teller displacements. Density functional calculations provide insight into the intriguing interplay between the various degrees of freedom now resolved on the atomic level.

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Chemically induced Jahn-Teller ordering on manganite surfaces

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