Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17 O4

Wei Wang; Kai Sun; Yuzki M. Oey; Robert J. Cava; Lijun Wu; Yimei Zhu; Richeng Yu; Jing Tao

doi:10.1103/PhysRevMaterials.3.093601

Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17 O4

Wei Wang, Kai Sun, Yuzki M. Oey, Robert J. Cava, Lijun Wu, Yimei Zhu, Richeng Yu, Jing Tao

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

Abstract

Understanding the structural origin of the functionality in cuprates has attracted tremendous attention over several decades. In particular, probing distortions in the Cu-O bonding is of great importance for exploring the coupling between the charge and the lattice, a key mechanism for superconductivity and other functionality in correlated materials. Here we study a superlattice modulation in the Tb2Cu0.83Pd0.17O4 "214" material, which possesses no superconductivity itself but has the parent structure of the R2CuO4 (R = a rare-earth element) superconducting cuprate group. Using transmission electron microscopy (TEM), we find that this superlattice modulation is formed by Cu ion displacements in a direction perpendicular to the Cu-O planes. The superlattice modulation undergoes a reversible electronic smectic-nematic phase transition under electron-beam illumination. With the help of in situ TEM results, our findings imply that the superlattice modulation in this material arises from spatially modulated charge ordering at the Cu sites.

Original language	English (US)
Article number	093601
Journal	Physical Review Materials
Volume	3
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevMaterials.3.093601
State	Published - Sep 12 2019

All Science Journal Classification (ASJC) codes

Materials Science(all)
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevMaterials.3.093601

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@article{bf4584d12bb14faea3c622852591d41a,

title = "Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17 O4",

abstract = "Understanding the structural origin of the functionality in cuprates has attracted tremendous attention over several decades. In particular, probing distortions in the Cu-O bonding is of great importance for exploring the coupling between the charge and the lattice, a key mechanism for superconductivity and other functionality in correlated materials. Here we study a superlattice modulation in the Tb2Cu0.83Pd0.17O4 {"}214{"} material, which possesses no superconductivity itself but has the parent structure of the R2CuO4 (R = a rare-earth element) superconducting cuprate group. Using transmission electron microscopy (TEM), we find that this superlattice modulation is formed by Cu ion displacements in a direction perpendicular to the Cu-O planes. The superlattice modulation undergoes a reversible electronic smectic-nematic phase transition under electron-beam illumination. With the help of in situ TEM results, our findings imply that the superlattice modulation in this material arises from spatially modulated charge ordering at the Cu sites.",

author = "Wei Wang and Kai Sun and Oey, {Yuzki M.} and Cava, {Robert J.} and Lijun Wu and Yimei Zhu and Richeng Yu and Jing Tao",

note = "Funding Information: R.Y. and W.W. would like to acknowledge the financial support by the National Key Research Program of China (Grants No. 2017YFA0206200 and No. 2016YFA0300701), the National Natural Science Foundation of China (Grants No. 11874413 and No. 11574376) and China Scholarship Council for support of W.W. to study abroad. The electronic microscopy work was carried out at Brookhaven National Laboratory (BNL) and sponsored by the US Department of Energy (DOE) basic Energy Sciences (BES), by the Materials Sciences and Engineering Division under Contract DE-SC0012704. It was also supported by the resources of Center for Functional Nanomaterials at BNL. K.S. was supported in part by NSF under Grant No. ECCS-1307744 and the MCubed program at University of Michigan. The work at Princeton University was supported by National Science Foundation (Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM) under Cooperative Agreement No. DMR-1539918).",

year = "2019",

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doi = "10.1103/PhysRevMaterials.3.093601",

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T1 - Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17 O4

AU - Wang, Wei

AU - Sun, Kai

AU - Oey, Yuzki M.

AU - Cava, Robert J.

AU - Wu, Lijun

AU - Zhu, Yimei

AU - Yu, Richeng

AU - Tao, Jing

N1 - Funding Information: R.Y. and W.W. would like to acknowledge the financial support by the National Key Research Program of China (Grants No. 2017YFA0206200 and No. 2016YFA0300701), the National Natural Science Foundation of China (Grants No. 11874413 and No. 11574376) and China Scholarship Council for support of W.W. to study abroad. The electronic microscopy work was carried out at Brookhaven National Laboratory (BNL) and sponsored by the US Department of Energy (DOE) basic Energy Sciences (BES), by the Materials Sciences and Engineering Division under Contract DE-SC0012704. It was also supported by the resources of Center for Functional Nanomaterials at BNL. K.S. was supported in part by NSF under Grant No. ECCS-1307744 and the MCubed program at University of Michigan. The work at Princeton University was supported by National Science Foundation (Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM) under Cooperative Agreement No. DMR-1539918).

PY - 2019/9/12

Y1 - 2019/9/12

N2 - Understanding the structural origin of the functionality in cuprates has attracted tremendous attention over several decades. In particular, probing distortions in the Cu-O bonding is of great importance for exploring the coupling between the charge and the lattice, a key mechanism for superconductivity and other functionality in correlated materials. Here we study a superlattice modulation in the Tb2Cu0.83Pd0.17O4 "214" material, which possesses no superconductivity itself but has the parent structure of the R2CuO4 (R = a rare-earth element) superconducting cuprate group. Using transmission electron microscopy (TEM), we find that this superlattice modulation is formed by Cu ion displacements in a direction perpendicular to the Cu-O planes. The superlattice modulation undergoes a reversible electronic smectic-nematic phase transition under electron-beam illumination. With the help of in situ TEM results, our findings imply that the superlattice modulation in this material arises from spatially modulated charge ordering at the Cu sites.

AB - Understanding the structural origin of the functionality in cuprates has attracted tremendous attention over several decades. In particular, probing distortions in the Cu-O bonding is of great importance for exploring the coupling between the charge and the lattice, a key mechanism for superconductivity and other functionality in correlated materials. Here we study a superlattice modulation in the Tb2Cu0.83Pd0.17O4 "214" material, which possesses no superconductivity itself but has the parent structure of the R2CuO4 (R = a rare-earth element) superconducting cuprate group. Using transmission electron microscopy (TEM), we find that this superlattice modulation is formed by Cu ion displacements in a direction perpendicular to the Cu-O planes. The superlattice modulation undergoes a reversible electronic smectic-nematic phase transition under electron-beam illumination. With the help of in situ TEM results, our findings imply that the superlattice modulation in this material arises from spatially modulated charge ordering at the Cu sites.

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