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Title: Smectic and nematic phase modulations and transitions under electron beam in Tb 2 Cu 0.83 Pd 0.17 O 4

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.

Authors:
 [1];  [2];  [3];  [3];  [4];  [4];  [5]; ORCiD logo [4]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences (CAS), Beijing (China)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Princeton Univ., NJ (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences (CAS), Beijing (China)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1573476
Report Number(s):
BNL-212306-2019-JAAM
Journal ID: ISSN 2475-9953; PRMHAR; TRN: US2100211
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Materials
Additional Journal Information:
Journal Volume: 3; Journal Issue: 9; Journal ID: ISSN 2475-9953
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Wang, Wei, Sun, Kai, Oey, Yuzki M., Cava, Robert J., Wu, Lijun, Zhu, Yimei, Yu, Richeng, and Tao, Jing. Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17O4. United States: N. p., 2019. Web. doi:10.1103/PhysRevMaterials.3.093601.
Wang, Wei, Sun, Kai, Oey, Yuzki M., Cava, Robert J., Wu, Lijun, Zhu, Yimei, Yu, Richeng, & Tao, Jing. Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17O4. United States. doi:10.1103/PhysRevMaterials.3.093601.
Wang, Wei, Sun, Kai, Oey, Yuzki M., Cava, Robert J., Wu, Lijun, Zhu, Yimei, Yu, Richeng, and Tao, Jing. Thu . "Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17O4". United States. doi:10.1103/PhysRevMaterials.3.093601. https://www.osti.gov/servlets/purl/1573476.
@article{osti_1573476,
title = {Smectic and nematic phase modulations and transitions under electron beam in Tb2Cu0.83Pd0.17O4},
author = {Wang, Wei and Sun, Kai and Oey, Yuzki M. and Cava, Robert J. and Wu, Lijun and Zhu, Yimei and Yu, Richeng and Tao, Jing},
abstractNote = {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.},
doi = {10.1103/PhysRevMaterials.3.093601},
journal = {Physical Review Materials},
number = 9,
volume = 3,
place = {United States},
year = {2019},
month = {9}
}

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